#31B280
Closest named color: Bluey Green (#2BB179). oklch(68.2% 0.133 162.5), rgb(49, 178, 128).
Aa
Black text reads best on this color (7.81:1).
About this color
#31B280 is a medium-light, moderately saturated green. In OKLCH its lightness is 68%, its chroma 0.133 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Green (#2BB179), ΔE 0.010 away. Black text reads best on it, at 7.81:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Bluey Green (#2BB179) |
| Black text | 7.81:1 |
| White text | 2.68:1 |
Values
| HEX | #31B280 |
| RGB | rgb(49, 178, 128) |
| HSL | hsl(157, 57%, 45%) |
| OKLCH | oklch(68.2% 0.133 162.5) |
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 #31B280 | 2.68:1 | Fails | Lc -57.0 | Large or bold text, headings |
| Black text on #31B280 | 7.81:1 | AAA | Lc 52.2 | Large or bold text, headings |
| #31B280 text on white | 2.68:1 | Fails | Lc 51.8 | Large or bold text, headings |
| #31B280 text on black | 7.81:1 | AAA | Lc -50.1 | 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
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DCEFE5
oklch(93.5% 0.024 163.1)
-
Step 200
200
#BFE3D0
oklch(88.5% 0.046 162.3)
-
Step 300
300
#8ED2B1
oklch(80.9% 0.083 162.8)
-
Step 400
400 (this color)
#31B280
oklch(68.2% 0.133 162.5)
-
Step 500
500
#00A270
oklch(63% 0.137 162.6)
-
Step 600
600
#00895E
oklch(55.7% 0.121 162.5)
-
Step 700
700
#00734E
oklch(49.1% 0.107 162.4)
-
Step 800
800
#005E3F
oklch(42.6% 0.093 162.3)
-
Step 900
900
#004F34
oklch(37.8% 0.083 162.1)
-
Step 950
950
#002F1E
oklch(27% 0.058 163)
#31B280 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) | #AFA57D | 0.128 |
| Deuteranopia (no green cones) | #9F9983 | 0.125 |
| Tritanopia (no blue cones) | #00B2A4 | 0.051 |
| Achromatopsia (no color) | #9E9E9E | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31B280
#31B280
oklch(68.2% 0.133 162.5)
- #D075AF
#D075AF
oklch(68.1% 0.134 342.4)
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 #31B280, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Green #2BB179 ΔE 0.010
- Dark Seafoam Green #3EAF76 ΔE 0.013
- Dark Seafoam #1FB57A ΔE 0.016
- Green Teal #0CB577 ΔE 0.021
- Medium Sea Green #3CB371 ΔE 0.021
- Seaweed Green #35AD6B ΔE 0.027
- Jade Green #2BAF6A ΔE 0.029
- Algae #54AC68 ΔE 0.032
Use #31B280 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.