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Frank Mallorca

#1b589a
Notes

Frank Mallorca (#1B589A) is a true azure with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (211°, 70%, 35%) 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
#1b589a
RGB
rgb(27, 88, 154)
HSL
hsl(211, 70%, 35%)
HWB
hwb(211 11% 40%)
OKLCH
oklch(45.8% 0.124 253.7)
P3
color(display-p3 0.1768 0.3401 0.5851)
HSV
hsv(211, 82%, 60%)
LAB
lab(37.01% 5.74 -41.42)
LCH
lch(37.01% 41.82 277.89)
CMYK
cmyk(82%, 43%, 0%, 40%)

Etymology

Frank
adjective

From the Old French franc, free, sincere — used as a color modifier since the seventeenth century for hues that read as direct and unhedged. Frank red, frank brown: moderate-to-high saturation combined with optical directness. Sits at the crisp-bucket alongside direct and honest.

Mallorca
noun

The largest Balearic island — and the saturated deep blue of Mallorcan Tramuntana coastline at Cala Tuent and Sa Calobra. Mallorca color refers to the cove water at Sa Calobra: a saturated, slightly cool deep blue with the optical depth of cold-water Mediterranean cove against limestone cliff.

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.

#1b589a
Original
#375d9d
Protanopia
#205299
Deuteranopia
#006871
Tritanopia
#505050
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).
AAAon White
7.22:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.91:1

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
##1B589A
Display P3
Display P3
color(display-p3 0.1768 0.3401 0.5851)
P3 has subtle headroomOKLCH chroma 0.124

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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