#31F5D9
Closest named color: Bright Aqua (#0BF9EA). oklch(87.3% 0.151 180), rgb(49, 245, 217).
Aa
Black text reads best on this color (15.19:1).
About this color
#31F5D9 is a light, vivid teal or cyan. In OKLCH its lightness is 87%, its chroma 0.151 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Aqua (#0BF9EA), ΔE 0.022 away. Black text reads best on it, at 15.19:1.
| Hue family | Teals and cyans |
| Lightness | light (87%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Bright Aqua (#0BF9EA) |
| Black text | 15.19:1 |
| White text | 1.38:1 |
Values
| HEX | #31F5D9 |
| RGB | rgb(49, 245, 217) |
| HSL | hsl(171, 91%, 58%) |
| OKLCH | oklch(87.3% 0.151 180) |
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 #31F5D9 | 1.38:1 | Fails | Lc -20.7 | Dividers and decoration only |
| Black text on #31F5D9 | 15.19:1 | AAA | Lc 85.6 | Fine for body text |
| #31F5D9 text on white | 1.38:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #31F5D9 text on black | 15.19:1 | AAA | Lc -85.5 | Fine for body text |
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 200.
-
Step 50
50
#E4FCF6
oklch(97.2% 0.026 179.1)
-
Step 100
100
#C2F7EB
oklch(93.6% 0.056 179.6)
-
Step 200
200 (this color)
#31F5D9
oklch(87.3% 0.151 180)
-
Step 300
300
#00DFC4
oklch(81% 0.147 179.8)
-
Step 400
400
#00BAA4
oklch(70.7% 0.128 180.3)
-
Step 500
500
#00A08C
oklch(63.2% 0.115 179.7)
-
Step 600
600
#008676
oklch(55.6% 0.1 180.5)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#005D51
oklch(42.9% 0.078 180)
-
Step 900
900
#004D43
oklch(37.7% 0.068 180.3)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#31F5D9 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) | #EAE6D8 | 0.159 |
| Deuteranopia (no green cones) | #D1D4DB | 0.151 |
| Tritanopia (no blue cones) | #00F9EC | 0.025 |
| Achromatopsia (no color) | #DBDBDB | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31F5D9
#31F5D9
oklch(87.3% 0.151 180)
- #FFC2D3
#FFC2D3
oklch(87.4% 0.073 0.3)
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 #31F5D9, closest first.
No curated palette has a color within ΔE 0.04 of #31F5D9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Aqua #0BF9EA ΔE 0.022
- Bright Teal #01F9C6 ΔE 0.033
- Light Turquoise #7EF4CC ΔE 0.041
- Bright Turquoise #0FFEF9 ΔE 0.043
- Aqua Marine #2EE8BB ΔE 0.047
- Bright Light Blue #26F7FD ΔE 0.049
- Cyan #00FFFF ΔE 0.051
- Bright Cyan #41FDFE ΔE 0.052
Use #31F5D9 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.