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Warm Loch

#04a7d4
Notes

Warm Loch (#04A7D4) 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 (193°, 96%, 42%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#04a7d4
RGB
rgb(4, 167, 212)
HSL
hsl(193, 96%, 42%)
HWB
hwb(193 2% 17%)
OKLCH
oklch(67.8% 0.129 225.9)
P3
color(display-p3 0.2926 0.6450 0.8138)
HSV
hsv(193, 98%, 83%)
LAB
lab(63.68% -19.94 -32.87)
LCH
lch(63.68% 38.45 238.76)
CMYK
cmyk(98%, 21%, 0%, 17%)

Etymology

Warm
adjective

Old English wearm, of moderate heat — used as a color modifier since the medieval period for hues that read as containing red, orange, or yellow undertones. Warm gray, warm white: not necessarily a temperature, but the optical impression of a slight red-orange shift. Sits across the crisp and neutral buckets.

Loch
noun

The Scottish word for lake (from Gaelic loch) — particularly the saturated deep blue of Loch Ness, Loch Lomond, and the highland lochs of the western Highlands. Loch color refers to Loch Lomond at midday: a saturated, slightly cool deep blue with the optical depth of cold-water highland lake.

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.

#04a7d4
Original
#8ea4d6
Protanopia
#7793d3
Deuteranopia
#00b4b6
Tritanopia
#888888
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).
Failon White
2.81:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
7.48:1

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
##04A7D4
Display P3
Display P3
color(display-p3 0.2926 0.6450 0.8138)
P3 has subtle headroomOKLCH chroma 0.129

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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