#31CBDB
Closest named color: Dark Turquoise (#00CED1). oklch(77.3% 0.123 205.7), rgb(49, 203, 219).
Aa
Black text reads best on this color (10.69:1).
About this color
#31CBDB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.123 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.022 away. Black text reads best on it, at 10.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.69:1 |
| White text | 1.96:1 |
Values
| HEX | #31CBDB |
| RGB | rgb(49, 203, 219) |
| HSL | hsl(186, 70%, 53%) |
| OKLCH | oklch(77.3% 0.123 205.7) |
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 #31CBDB | 1.96:1 | Fails | Lc -41.7 | Non-text elements, placeholder text |
| Black text on #31CBDB | 10.69:1 | AAA | Lc 66.5 | Content text, not long reading |
| #31CBDB text on white | 1.96:1 | Fails | Lc 37.4 | Non-text elements, placeholder text |
| #31CBDB text on black | 10.69:1 | AAA | Lc -65.1 | 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
#EAF9FB
oklch(97.2% 0.016 206.4)
-
Step 100
100
#D0F1F5
oklch(93.6% 0.035 205.5)
-
Step 200
200
#A3E7EF
oklch(88.5% 0.069 205.2)
-
Step 300
300 (this color)
#31CBDB
oklch(77.3% 0.123 205.7)
-
Step 400
400
#00B5C5
oklch(70.6% 0.121 206)
-
Step 500
500
#009CA9
oklch(63.2% 0.108 205.2)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#31CBDB 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) | #BAC3DC | 0.121 |
| Deuteranopia (no green cones) | #A2B2DB | 0.109 |
| Tritanopia (no blue cones) | #00D4D0 | 0.035 |
| Achromatopsia (no color) | #B9B9B9 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31CBDB
#31CBDB
oklch(77.3% 0.123 205.7)
- #FA958C
#FA958C
oklch(77.3% 0.123 25.7)
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 #31CBDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.022
- Medium Turquoise #48D1CC ΔE 0.033
- Aqua Blue #02D8E9 ΔE 0.035
- Vivid Sky Blue #4CC9F0 ΔE 0.037
- Bright Sky Blue #02CCFE ΔE 0.050
- Turquoise #40E0D0 ΔE 0.068
- Lightblue #7BC8F6 ΔE 0.068
- Sky Blue #87CEEB ΔE 0.068
Use #31CBDB 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.