#31A183
Closest named color: Persian Green (#2A9D8F). oklch(63.9% 0.109 171.1), rgb(49, 161, 131).
Aa
Black text reads best on this color (6.55:1).
About this color
#31A183 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.109 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), ΔE 0.025 away. Black text reads best on it, at 6.55:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 6.55:1 |
| White text | 3.20:1 |
Values
| HEX | #31A183 |
| RGB | rgb(49, 161, 131) |
| HSL | hsl(164, 53%, 41%) |
| OKLCH | oklch(63.9% 0.109 171.1) |
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 #31A183 | 3.20:1 | AA large text | Lc -64.3 | Content text, not long reading |
| Black text on #31A183 | 6.55:1 | AA | Lc 45.2 | Large or bold text, headings |
| #31A183 text on white | 3.20:1 | AA large text | Lc 58.9 | Large or bold text, headings |
| #31A183 text on black | 6.55:1 | AA | Lc -42.8 | Non-text elements, placeholder 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 500.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E0EDE8
oklch(93.5% 0.015 171)
-
Step 200
200
#C7E0D6
oklch(88.5% 0.03 169.6)
-
Step 300
300
#9ECCBC
oklch(80.8% 0.053 171.6)
-
Step 400
400
#65B29A
oklch(70.7% 0.085 171.6)
-
Step 500
500 (this color)
#31A183
oklch(63.9% 0.109 171.1)
-
Step 600
600
#00876B
oklch(55.5% 0.108 171.4)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800
#005D49
oklch(42.6% 0.083 171.6)
-
Step 900
900
#054E3D
oklch(37.8% 0.072 171.3)
-
Step 950
950
#092D23
oklch(26.8% 0.045 170.9)
#31A183 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) | #9C9682 | 0.112 |
| Deuteranopia (no green cones) | #8D8B85 | 0.108 |
| Tritanopia (no blue cones) | #00A298 | 0.031 |
| Achromatopsia (no color) | #909090 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31A183
#31A183
oklch(63.9% 0.109 171.1)
- #BE6F94
#BE6F94
oklch(64% 0.109 351.1)
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 #31A183, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.025
- Ocean Green #3D9973 ΔE 0.027
- Blue Green #0F9B8E ΔE 0.031
- Jade #1FA774 ΔE 0.033
- Sea #3C9992 ΔE 0.039
- Grey Teal #5E9B8A ΔE 0.041
- Dull Teal #5F9E8F ΔE 0.043
- Dark Seafoam Green #3EAF76 ΔE 0.052
Use #31A183 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.