#31B184
Closest named color: Bluey Green (#2BB179). oklch(68% 0.129 164.8), rgb(49, 177, 132).
Aa
Black text reads best on this color (7.75:1).
About this color
#31B184 is a medium-light, moderately saturated green. In OKLCH its lightness is 68%, its chroma 0.129 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Green (#2BB179), ΔE 0.016 away. Black text reads best on it, at 7.75:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Bluey Green (#2BB179) |
| Black text | 7.75:1 |
| White text | 2.70:1 |
Values
| HEX | #31B184 |
| RGB | rgb(49, 177, 132) |
| HSL | hsl(159, 57%, 44%) |
| OKLCH | oklch(68% 0.129 164.8) |
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 #31B184 | 2.70:1 | Fails | Lc -57.3 | Large or bold text, headings |
| Black text on #31B184 | 7.75:1 | AAA | Lc 51.9 | Large or bold text, headings |
| #31B184 text on white | 2.70:1 | Fails | Lc 52.1 | Large or bold text, headings |
| #31B184 text on black | 7.75:1 | AAA | Lc -49.8 | 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
#EFF8F4
oklch(97.1% 0.011 167.8)
-
Step 100
100
#DCEFE6
oklch(93.6% 0.023 165.8)
-
Step 200
200
#BFE3D2
oklch(88.5% 0.044 165.2)
-
Step 300
300
#8ED2B3
oklch(81% 0.082 164.3)
-
Step 400
400 (this color)
#31B184
oklch(68% 0.129 164.8)
-
Step 500
500
#00A275
oklch(63.1% 0.133 165)
-
Step 600
600
#008862
oklch(55.5% 0.117 165.2)
-
Step 700
700
#007351
oklch(49.2% 0.104 164.3)
-
Step 800
800
#005E42
oklch(42.7% 0.09 164.7)
-
Step 900
900
#004E37
oklch(37.6% 0.079 165.5)
-
Step 950
950
#002F1F
oklch(27% 0.057 164.4)
#31B184 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) | #ADA482 | 0.126 |
| Deuteranopia (no green cones) | #9D9887 | 0.123 |
| Tritanopia (no blue cones) | #00B1A5 | 0.047 |
| Achromatopsia (no color) | #9D9D9D | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31B184
#31B184
oklch(68% 0.129 164.8)
- #D076AB
#D076AB
oklch(68.1% 0.129 344.8)
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 #31B184, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Green #2BB179 ΔE 0.016
- Dark Seafoam Green #3EAF76 ΔE 0.018
- Dark Seafoam #1FB57A ΔE 0.022
- Greeny Blue #42B395 ΔE 0.027
- Green Teal #0CB577 ΔE 0.027
- Medium Sea Green #3CB371 ΔE 0.028
- Seaweed Green #35AD6B ΔE 0.032
- Jade #1FA774 ΔE 0.035
Use #31B184 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.