#31BCA4
Closest named color: Topaz (#13BBAF). oklch(71.7% 0.12 178.2), rgb(49, 188, 164).
Aa
Black text reads best on this color (8.85:1).
About this color
#31BCA4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.120 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.018 away. Black text reads best on it, at 8.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.85:1 |
| White text | 2.37:1 |
Values
| HEX | #31BCA4 |
| RGB | rgb(49, 188, 164) |
| HSL | hsl(170, 59%, 46%) |
| OKLCH | oklch(71.7% 0.12 178.2) |
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 #31BCA4 | 2.37:1 | Fails | Lc -51.2 | Large or bold text, headings |
| Black text on #31BCA4 | 8.85:1 | AAA | Lc 57.7 | Large or bold text, headings |
| #31BCA4 text on white | 2.37:1 | Fails | Lc 46.3 | Large or bold text, headings |
| #31BCA4 text on black | 8.85:1 | AAA | Lc -55.8 | Large or bold text, headings |
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
#EFF8F5
oklch(97.2% 0.01 174.3)
-
Step 100
100
#DBEFEA
oklch(93.6% 0.022 179.2)
-
Step 200
200
#BDE3D9
oklch(88.6% 0.042 177.6)
-
Step 300
300
#8AD1C1
oklch(80.9% 0.075 178.5)
-
Step 400
400 (this color)
#31BCA4
oklch(71.7% 0.12 178.2)
-
Step 500
500
#00A08A
oklch(63.2% 0.116 178.3)
-
Step 600
600
#008673
oklch(55.5% 0.102 178.1)
-
Step 700
700
#007161
oklch(49.1% 0.09 178.4)
-
Step 800
800
#005D4F
oklch(42.8% 0.079 177.8)
-
Step 900
900
#004D42
oklch(37.6% 0.069 179)
-
Step 950
950
#002E26
oklch(26.9% 0.05 177.5)
#31BCA4 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) | #B4B0A3 | 0.127 |
| Deuteranopia (no green cones) | #A2A3A6 | 0.121 |
| Tritanopia (no blue cones) | #00BFB5 | 0.023 |
| Achromatopsia (no color) | #A8A8A8 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31BCA4
#31BCA4
oklch(71.7% 0.12 178.2)
- #E083A3
#E083A3
oklch(71.8% 0.12 358.5)
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 #31BCA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.018
- Greeny Blue #42B395 ΔE 0.027
- Light Sea Green #20B2AA ΔE 0.035
- Green Blue #01C08D ΔE 0.041
- Greenblue #23C48B ΔE 0.049
- Dark Seafoam #1FB57A ΔE 0.059
- Bluey Green #2BB179 ΔE 0.061
- Tea #65AB7C ΔE 0.062
Use #31BCA4 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.