#55A6CB
Closest named color: Greyblue (#77A1B5). oklch(68.9% 0.096 230), rgb(85, 166, 203).
Aa
Black text reads best on this color (7.70:1).
About this color
#55A6CB is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.096 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.042 away. Black text reads best on it, at 7.70:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.70:1 |
| White text | 2.72:1 |
Values
| HEX | #55A6CB |
| RGB | rgb(85, 166, 203) |
| HSL | hsl(199, 53%, 56%) |
| OKLCH | oklch(68.9% 0.096 230) |
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 #55A6CB | 2.72:1 | Fails | Lc -57.8 | Large or bold text, headings |
| Black text on #55A6CB | 7.70:1 | AAA | Lc 51.4 | Large or bold text, headings |
| #55A6CB text on white | 2.72:1 | Fails | Lc 52.6 | Large or bold text, headings |
| #55A6CB text on black | 7.70:1 | AAA | Lc -49.3 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DFECF3
oklch(93.5% 0.017 230.9)
-
Step 200
200
#C4DEEB
oklch(88.5% 0.033 229.3)
-
Step 300
300
#99C9E0
oklch(81% 0.06 228.9)
-
Step 400
400 (this color)
#55A6CB
oklch(68.9% 0.096 230)
-
Step 500
500
#1196C5
oklch(63.1% 0.123 230.1)
-
Step 600
600
#007EA7
oklch(55.5% 0.111 230)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#004862
oklch(37.7% 0.076 230.8)
-
Step 950
950
#032B3A
oklch(27.1% 0.05 228.5)
#55A6CB 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) | #93A4CD | 0.067 |
| Deuteranopia (no green cones) | #8397CB | 0.060 |
| Tritanopia (no blue cones) | #00B0B2 | 0.065 |
| Achromatopsia (no color) | #9D9D9D | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55A6CB
#55A6CB
oklch(68.9% 0.096 230)
- #CB8964
#CB8964
oklch(68.8% 0.096 49.9)
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 #55A6CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.042
- Turquoise Blue #06B1C4 ΔE 0.047
- Bluegrey #85A3B2 ΔE 0.057
- Cadet Blue #5F9EA0 ΔE 0.062
- Bluey Grey #89A0B0 ΔE 0.062
- Cool Gray #8D99AE ΔE 0.070
- Faded Blue #658CBB ΔE 0.070
- Light Sea Green #20B2AA ΔE 0.076
Use #55A6CB 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.