#55CBB8
Closest named color: Medium Aquamarine (#66CDAA). oklch(77% 0.11 181), rgb(85, 203, 184).
Aa
Black text reads best on this color (10.62:1).
About this color
#55CBB8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.110 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.024 away. Black text reads best on it, at 10.62:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.62:1 |
| White text | 1.97:1 |
Values
| HEX | #55CBB8 |
| RGB | rgb(85, 203, 184) |
| HSL | hsl(170, 53%, 56%) |
| OKLCH | oklch(77% 0.11 181) |
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 #55CBB8 | 1.97:1 | Fails | Lc -42.3 | Non-text elements, placeholder text |
| Black text on #55CBB8 | 10.62:1 | AAA | Lc 66.0 | Content text, not long reading |
| #55CBB8 text on white | 1.97:1 | Fails | Lc 37.9 | Non-text elements, placeholder text |
| #55CBB8 text on black | 10.62:1 | AAA | Lc -64.5 | Content text, not long reading |
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 300.
-
Step 50
50
#ECF9F6
oklch(97.2% 0.014 180.7)
-
Step 100
100
#D4F1EB
oklch(93.5% 0.031 181.8)
-
Step 200
200
#ADE7DB
oklch(88.5% 0.061 180.7)
-
Step 300
300 (this color)
#55CBB8
oklch(77% 0.11 181)
-
Step 400
400
#00BAA5
oklch(70.7% 0.128 180.9)
-
Step 500
500
#009F8D
oklch(63% 0.114 181)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#55CBB8 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) | #C3C0B7 | 0.117 |
| Deuteranopia (no green cones) | #B1B3BA | 0.111 |
| Tritanopia (no blue cones) | #00CEC5 | 0.029 |
| Achromatopsia (no color) | #B8B8B8 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55CBB8
#55CBB8
oklch(77% 0.11 181)
- #EE96B0
#EE96B0
oklch(77% 0.11 0.9)
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 #55CBB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.024
- Medium Turquoise #48D1CC ΔE 0.028
- Seafoam Blue #78D1B6 ΔE 0.035
- Pale Teal #82CBB2 ΔE 0.037
- Dark Turquoise #00CED1 ΔE 0.039
- Turquoise #40E0D0 ΔE 0.057
- Topaz #13BBAF ΔE 0.058
- Emerald #06D6A0 ΔE 0.060
Use #55CBB8 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.