#31DCE7
Closest named color: Aqua Blue (#02D8E9). oklch(81.8% 0.131 201.7), rgb(49, 220, 231).
Aa
Black text reads best on this color (12.52:1).
About this color
#31DCE7 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 82%, its chroma 0.131 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.016 away. Black text reads best on it, at 12.52:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.52:1 |
| White text | 1.67:1 |
Values
| HEX | #31DCE7 |
| RGB | rgb(49, 220, 231) |
| HSL | hsl(184, 79%, 55%) |
| OKLCH | oklch(81.8% 0.131 201.7) |
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 #31DCE7 | 1.67:1 | Fails | Lc -32.8 | Non-text elements, placeholder text |
| Black text on #31DCE7 | 12.52:1 | AAA | Lc 74.7 | Content text, not long reading |
| #31DCE7 text on white | 1.67:1 | Fails | Lc 29.2 | Dividers and decoration only |
| #31DCE7 text on black | 12.52:1 | AAA | Lc -73.7 | 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
#E9F9FA
oklch(97.1% 0.017 201.4)
-
Step 100
100
#CEF2F5
oklch(93.6% 0.038 202.7)
-
Step 200
200
#9FE8ED
oklch(88.5% 0.073 201.4)
-
Step 300
300 (this color)
#31DCE7
oklch(81.8% 0.131 201.7)
-
Step 400
400
#00B6C0
oklch(70.7% 0.12 201.8)
-
Step 500
500
#009CA5
oklch(63.1% 0.107 202)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#31DCE7 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) | #CBD2E8 | 0.132 |
| Deuteranopia (no green cones) | #B2C0E8 | 0.122 |
| Tritanopia (no blue cones) | #00E5DF | 0.031 |
| Achromatopsia (no color) | #C8C8C8 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31DCE7
#31DCE7
oklch(81.8% 0.131 201.7)
- #FFA9A6
#FFA9A6
oklch(81.8% 0.102 21.7)
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 #31DCE7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.016
- Turquoise #40E0D0 ΔE 0.038
- Medium Turquoise #48D1CC ΔE 0.041
- Dark Turquoise #00CED1 ΔE 0.047
- Vivid Sky Blue #4CC9F0 ΔE 0.058
- Bright Sky Blue #02CCFE ΔE 0.064
- Robin's Egg #6DEDFD ΔE 0.065
- Sky Blue #87CEEB ΔE 0.065
Use #31DCE7 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.