#31CA79
Closest named color: Seaweed (#18D17B). oklch(74.3% 0.171 154.5), rgb(49, 202, 121).
Aa
Black text reads best on this color (9.85:1).
About this color
#31CA79 is a medium-light, vivid green. In OKLCH its lightness is 74%, its chroma 0.171 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.019 away. Black text reads best on it, at 9.85:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 9.85:1 |
| White text | 2.13:1 |
Values
| HEX | #31CA79 |
| RGB | rgb(49, 202, 121) |
| HSL | hsl(148, 61%, 49%) |
| OKLCH | oklch(74.3% 0.171 154.5) |
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 #31CA79 | 2.13:1 | Fails | Lc -45.9 | Large or bold text, headings |
| Black text on #31CA79 | 9.85:1 | AAA | Lc 62.6 | Content text, not long reading |
| #31CA79 text on white | 2.13:1 | Fails | Lc 41.3 | Non-text elements, placeholder text |
| #31CA79 text on black | 9.85:1 | AAA | Lc -60.9 | Content text, not long reading |
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
#EEF8F1
oklch(97% 0.014 155.6)
-
Step 100
100
#DBF0E1
oklch(93.6% 0.03 154.7)
-
Step 200
200
#BBE5C8
oklch(88.4% 0.059 154.9)
-
Step 300
300
#87D5A2
oklch(80.9% 0.106 154.7)
-
Step 400
400 (this color)
#31CA79
oklch(74.3% 0.171 154.5)
-
Step 500
500
#00A45C
oklch(63.1% 0.158 154.5)
-
Step 600
600
#008A4D
oklch(55.6% 0.138 154.7)
-
Step 700
700
#00743F
oklch(49.1% 0.123 154.3)
-
Step 800
800
#005F33
oklch(42.6% 0.106 154.6)
-
Step 900
900
#004F2A
oklch(37.6% 0.093 154.9)
-
Step 950
950
#003017
oklch(27.1% 0.068 154.6)
#31CA79 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) | #C9B973 | 0.150 |
| Deuteranopia (no green cones) | #B7AC7E | 0.148 |
| Tritanopia (no blue cones) | #00C8B6 | 0.085 |
| Achromatopsia (no color) | #B2B2B2 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31CA79
#31CA79
oklch(74.3% 0.171 154.5)
- #EB7ED7
#EB7ED7
oklch(74.3% 0.171 334.4)
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 #31CA79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.019
- Algae Green #21C36F ΔE 0.023
- Dark Mint #48C072 ΔE 0.027
- Dark Mint Green #20C073 ΔE 0.030
- Greenblue #23C48B ΔE 0.033
- Soft Green #6FC276 ΔE 0.042
- Green Blue #01C08D ΔE 0.046
- Emerald #06D6A0 ΔE 0.050
Use #31CA79 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.