#31C8A7
Closest named color: Medium Aquamarine (#66CDAA). oklch(74.8% 0.131 174), rgb(49, 200, 167).
Aa
Black text reads best on this color (9.95:1).
About this color
#31C8A7 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.131 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.037 away. Black text reads best on it, at 9.95:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 9.95:1 |
| White text | 2.11:1 |
Values
| HEX | #31C8A7 |
| RGB | rgb(49, 200, 167) |
| HSL | hsl(167, 61%, 49%) |
| OKLCH | oklch(74.8% 0.131 174) |
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 #31C8A7 | 2.11:1 | Fails | Lc -45.5 | Large or bold text, headings |
| Black text on #31C8A7 | 9.95:1 | AAA | Lc 63.0 | Content text, not long reading |
| #31C8A7 text on white | 2.11:1 | Fails | Lc 40.9 | Non-text elements, placeholder text |
| #31C8A7 text on black | 9.95:1 | AAA | Lc -61.4 | 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 400.
-
Step 50
50
#EEF8F5
oklch(97.1% 0.011 176.3)
-
Step 100
100
#DBEFE8
oklch(93.5% 0.023 172.8)
-
Step 200
200
#BBE4D7
oklch(88.6% 0.046 174)
-
Step 300
300
#86D2BC
oklch(80.8% 0.082 173.9)
-
Step 400
400 (this color)
#31C8A7
oklch(74.8% 0.131 174)
-
Step 500
500
#00A084
oklch(63% 0.119 174.3)
-
Step 600
600
#00876E
oklch(55.6% 0.106 173.6)
-
Step 700
700
#00725D
oklch(49.3% 0.094 174)
-
Step 800
800
#005D4B
oklch(42.7% 0.081 173.5)
-
Step 900
900
#004E3F
oklch(37.8% 0.072 174.1)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
#31C8A7 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) | #C1BBA5 | 0.136 |
| Deuteranopia (no green cones) | #ADADA9 | 0.129 |
| Tritanopia (no blue cones) | #00CABE | 0.031 |
| Achromatopsia (no color) | #B2B2B2 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31C8A7
#31C8A7
oklch(74.8% 0.131 174)
- #ED89B3
#ED89B3
oklch(74.9% 0.131 354.1)
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 #31C8A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.037
- Greenblue #23C48B ΔE 0.039
- Green Blue #01C08D ΔE 0.042
- Emerald #06D6A0 ΔE 0.045
- Topaz #13BBAF ΔE 0.045
- Medium Turquoise #48D1CC ΔE 0.056
- Dark Turquoise #00CED1 ΔE 0.057
- Greeny Blue #42B395 ΔE 0.058
Use #31C8A7 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.