#31BFA3
Closest named color: Topaz (#13BBAF). oklch(72.5% 0.124 176), rgb(49, 191, 163).
Aa
Black text reads best on this color (9.11:1).
About this color
#31BFA3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.124 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.025 away. Black text reads best on it, at 9.11:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.11:1 |
| White text | 2.30:1 |
Values
| HEX | #31BFA3 |
| RGB | rgb(49, 191, 163) |
| HSL | hsl(168, 59%, 47%) |
| OKLCH | oklch(72.5% 0.124 176) |
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 #31BFA3 | 2.30:1 | Fails | Lc -49.9 | Large or bold text, headings |
| Black text on #31BFA3 | 9.11:1 | AAA | Lc 58.9 | Large or bold text, headings |
| #31BFA3 text on white | 2.30:1 | Fails | Lc 45.0 | Large or bold text, headings |
| #31BFA3 text on black | 9.11:1 | AAA | Lc -57.1 | 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
#DBEFE9
oklch(93.6% 0.023 175.9)
-
Step 200
200
#BCE3D8
oklch(88.5% 0.043 176.3)
-
Step 300
300
#89D1BF
oklch(80.8% 0.077 176.7)
-
Step 400
400 (this color)
#31BFA3
oklch(72.5% 0.124 176)
-
Step 500
500
#00A087
oklch(63.1% 0.118 176.3)
-
Step 600
600
#008771
oklch(55.7% 0.104 175.8)
-
Step 700
700
#00715F
oklch(49% 0.091 176.5)
-
Step 800
800
#005D4D
oklch(42.7% 0.08 175.6)
-
Step 900
900
#004D40
oklch(37.6% 0.07 176.4)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#31BFA3 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) | #B8B3A2 | 0.130 |
| Deuteranopia (no green cones) | #A5A5A5 | 0.124 |
| Tritanopia (no blue cones) | #00C2B7 | 0.027 |
| Achromatopsia (no color) | #ABABAB | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31BFA3
#31BFA3
oklch(72.5% 0.124 176)
- #E384A8
#E384A8
oklch(72.5% 0.123 356.4)
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 #31BFA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.025
- Greeny Blue #42B395 ΔE 0.034
- Green Blue #01C08D ΔE 0.036
- Greenblue #23C48B ΔE 0.042
- Light Sea Green #20B2AA ΔE 0.044
- Medium Aquamarine #66CDAA ΔE 0.056
- Dark Seafoam #1FB57A ΔE 0.059
- Bluey Green #2BB179 ΔE 0.062
Use #31BFA3 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.