#31C583
Closest named color: Greenblue (#23C48B). oklch(73.2% 0.155 158.6), rgb(49, 197, 131).
Aa
Black text reads best on this color (9.44:1).
About this color
#31C583 is a medium-light, vivid green. In OKLCH its lightness is 73%, its chroma 0.155 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.012 away. Black text reads best on it, at 9.44:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.44:1 |
| White text | 2.22:1 |
Values
| HEX | #31C583 |
| RGB | rgb(49, 197, 131) |
| HSL | hsl(153, 60%, 48%) |
| OKLCH | oklch(73.2% 0.155 158.6) |
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 #31C583 | 2.22:1 | Fails | Lc -48.1 | Large or bold text, headings |
| Black text on #31C583 | 9.44:1 | AAA | Lc 60.6 | Content text, not long reading |
| #31C583 text on white | 2.22:1 | Fails | Lc 43.3 | Non-text elements, placeholder text |
| #31C583 text on black | 9.44:1 | AAA | Lc -58.8 | 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
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DBF0E3
oklch(93.6% 0.028 158.7)
-
Step 200
200
#BCE5CC
oklch(88.6% 0.055 158.3)
-
Step 300
300
#88D4A9
oklch(80.9% 0.098 158.5)
-
Step 400
400 (this color)
#31C583
oklch(73.2% 0.155 158.6)
-
Step 500
500
#00A367
oklch(63% 0.146 158.5)
-
Step 600
600
#008956
oklch(55.5% 0.129 158.6)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3A
oklch(42.8% 0.099 158.5)
-
Step 900
900
#004F30
oklch(37.7% 0.087 158.9)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#31C583 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) | #C3B67F | 0.144 |
| Deuteranopia (no green cones) | #B1A987 | 0.140 |
| Tritanopia (no blue cones) | #00C4B4 | 0.069 |
| Achromatopsia (no color) | #AEAEAE | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31C583
#31C583
oklch(73.2% 0.155 158.6)
- #E67EC9
#E67EC9
oklch(73.1% 0.156 338.6)
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 #31C583, closest first.
No curated palette has a color within ΔE 0.04 of #31C583.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.012
- Dark Mint #48C072 ΔE 0.021
- Dark Mint Green #20C073 ΔE 0.024
- Green Blue #01C08D ΔE 0.025
- Algae Green #21C36F ΔE 0.027
- Seaweed #18D17B ΔE 0.039
- Soft Green #6FC276 ΔE 0.039
- Cool Green #33B864 ΔE 0.046
Use #31C583 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.