#55A4CF
Closest named color: Greyblue (#77A1B5). oklch(68.6% 0.1 234.6), rgb(85, 164, 207).
Aa
Black text reads best on this color (7.59:1).
About this color
#55A4CF is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.100 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.047 away. Black text reads best on it, at 7.59:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.59:1 |
| White text | 2.76:1 |
Values
| HEX | #55A4CF |
| RGB | rgb(85, 164, 207) |
| HSL | hsl(201, 56%, 57%) |
| OKLCH | oklch(68.6% 0.1 234.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #55A4CF | 2.76:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #55A4CF | 7.59:1 | AAA | Lc 50.9 | Large or bold text, headings |
| #55A4CF text on white | 2.76:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #55A4CF text on black | 7.59:1 | AAA | Lc -48.7 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#F0F6FA
oklch(97% 0.008 236.6)
-
Step 100
100
#DFECF4
oklch(93.6% 0.018 234.5)
-
Step 200
200
#C4DDED
oklch(88.4% 0.035 235.9)
-
Step 300
300
#99C8E4
oklch(80.9% 0.063 234.7)
-
Step 400
400 (this color)
#55A4CF
oklch(68.6% 0.1 234.6)
-
Step 500
500
#1794CB
oklch(63% 0.128 235)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005679
oklch(42.8% 0.09 234.7)
-
Step 900
900
#004765
oklch(37.6% 0.08 234.9)
-
Step 950
950
#042A3C
oklch(26.9% 0.053 234.4)
#55A4CF with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #8FA3D1 | 0.063 |
| Deuteranopia (no green cones) | #7F96CE | 0.054 |
| Tritanopia (no blue cones) | #00AFB2 | 0.072 |
| Achromatopsia (no color) | #9B9B9B | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55A4CF
#55A4CF
oklch(68.6% 0.1 234.6)
- #CA895C
#CA895C
oklch(68.6% 0.1 54.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #55A4CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.047
- Turquoise Blue #06B1C4 ΔE 0.054
- Bluegrey #85A3B2 ΔE 0.062
- Faded Blue #658CBB ΔE 0.066
- Bluey Grey #89A0B0 ΔE 0.066
- Cadet Blue #5F9EA0 ΔE 0.068
- Cornflower Blue #6495ED ΔE 0.070
- Cool Gray #8D99AE ΔE 0.072
Use #55A4CF in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.