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Balanced Firmament

#2187b2
Notes

Balanced Firmament (#2187B2) is a true cyan with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (198°, 69%, 41%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#2187b2
RGB
rgb(33, 135, 178)
HSL
hsl(198, 69%, 41%)
HWB
hwb(198 13% 30%)
OKLCH
oklch(58.7% 0.110 231.9)
P3
color(display-p3 0.2613 0.5218 0.6823)
HSV
hsv(198, 81%, 70%)
LAB
lab(52.80% -13.06 -30.60)
LCH
lch(52.80% 33.27 246.89)
CMYK
cmyk(81%, 24%, 0%, 30%)

Etymology

Balanced
adjective

The past participle of balance, to weigh evenly. Used as a color modifier since the eighteenth century for hues that read as neither overcommitted nor restrained. Balanced sage, balanced taupe: moderate saturation combined with optical equilibrium. Sits at the crisp-bucket center alongside even.

Firmament
noun

The biblical sky-vault — and God called the firmament Heaven (Genesis). Firmament in literary and religious color vocabulary refers to the saturated deep blue of the cloudless midday sky as seen from a desert or mountain: a saturated, slightly cool deep blue with the optical brightness of a clear high-altitude atmosphere.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#2187b2
Original
#7185b4
Protanopia
#5e78b1
Deuteranopia
#009396
Tritanopia
#747474
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon White
4.06:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
5.17:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##2187B2
Display P3
Display P3
color(display-p3 0.2613 0.5218 0.6823)
P3 has subtle headroomOKLCH chroma 0.110

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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