#55B5CE
Closest named color: Turquoise Blue (#06B1C4). oklch(72.5% 0.097 217.4), rgb(85, 181, 206).
Aa
Black text reads best on this color (8.88:1).
About this color
#55B5CE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.097 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.040 away. Black text reads best on it, at 8.88:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.88:1 |
| White text | 2.36:1 |
Values
| HEX | #55B5CE |
| RGB | rgb(85, 181, 206) |
| HSL | hsl(192, 55%, 57%) |
| OKLCH | oklch(72.5% 0.097 217.4) |
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 #55B5CE | 2.36:1 | Fails | Lc -51.3 | Large or bold text, headings |
| Black text on #55B5CE | 8.88:1 | AAA | Lc 57.6 | Large or bold text, headings |
| #55B5CE text on white | 2.36:1 | Fails | Lc 46.4 | Large or bold text, headings |
| #55B5CE text on black | 8.88:1 | AAA | Lc -55.7 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DEEDF2
oklch(93.6% 0.017 219.7)
-
Step 200
200
#C1DFE8
oklch(88.5% 0.034 217.8)
-
Step 300
300
#94CBDA
oklch(80.9% 0.061 216.5)
-
Step 400
400 (this color)
#55B5CE
oklch(72.5% 0.097 217.4)
-
Step 500
500
#0099B6
oklch(63% 0.113 217.6)
-
Step 600
600
#008199
oklch(55.6% 0.099 216.9)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#004A59
oklch(37.7% 0.067 217.2)
-
Step 950
950
#002C36
oklch(27% 0.048 217.4)
#55B5CE 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) | #A5B0CF | 0.085 |
| Deuteranopia (no green cones) | #93A3CE | 0.076 |
| Tritanopia (no blue cones) | #00BEBD | 0.052 |
| Achromatopsia (no color) | #A9A9A9 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55B5CE
#55B5CE
oklch(72.5% 0.097 217.4)
- #DB917A
#DB917A
oklch(72.6% 0.096 38)
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 #55B5CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.040
- Greyblue #77A1B5 ΔE 0.060
- Vivid Sky Blue #4CC9F0 ΔE 0.063
- Light Sea Green #20B2AA ΔE 0.064
- Topaz #13BBAF ΔE 0.064
- Bluegrey #85A3B2 ΔE 0.064
- Deep Sky Blue #00BFFF ΔE 0.071
- Dark Turquoise #00CED1 ΔE 0.071
Use #55B5CE 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.