#31C9C3
Closest named color: Dark Turquoise (#00CED1). oklch(75.9% 0.121 190.8), rgb(49, 201, 195).
Aa
Black text reads best on this color (10.27:1).
About this color
#31C9C3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.121 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.021 away. Black text reads best on it, at 10.27:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.27:1 |
| White text | 2.04:1 |
Values
| HEX | #31C9C3 |
| RGB | rgb(49, 201, 195) |
| HSL | hsl(178, 61%, 49%) |
| OKLCH | oklch(75.9% 0.121 190.8) |
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 #31C9C3 | 2.04:1 | Fails | Lc -43.9 | Non-text elements, placeholder text |
| Black text on #31C9C3 | 10.27:1 | AAA | Lc 64.6 | Content text, not long reading |
| #31C9C3 text on white | 2.04:1 | Fails | Lc 39.4 | Non-text elements, placeholder text |
| #31C9C3 text on black | 10.27:1 | AAA | Lc -63.0 | 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
#EAF9F8
oklch(97.1% 0.016 192.1)
-
Step 100
100
#D0F2EF
oklch(93.6% 0.036 190.1)
-
Step 200
200
#A5E8E4
oklch(88.5% 0.067 191.3)
-
Step 300
300 (this color)
#31C9C3
oklch(75.9% 0.121 190.8)
-
Step 400
400
#00B8B2
oklch(70.6% 0.122 190.6)
-
Step 500
500
#009E99
oklch(63.1% 0.109 190.8)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005B58
oklch(42.5% 0.073 190.9)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#31C9C3 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) | #BDBEC3 | 0.128 |
| Deuteranopia (no green cones) | #A8AFC4 | 0.120 |
| Tritanopia (no blue cones) | #00CFC7 | 0.017 |
| Achromatopsia (no color) | #B5B5B5 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31C9C3
#31C9C3
oklch(75.9% 0.121 190.8)
- #F38F9E
#F38F9E
oklch(75.9% 0.122 10.7)
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 #31C9C3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.021
- Medium Turquoise #48D1CC ΔE 0.028
- Topaz #13BBAF ΔE 0.046
- Medium Aquamarine #66CDAA ΔE 0.049
- Seafoam Blue #78D1B6 ΔE 0.057
- Aqua Blue #02D8E9 ΔE 0.058
- Pale Teal #82CBB2 ΔE 0.059
- Turquoise #40E0D0 ΔE 0.065
Use #31C9C3 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.