#31903F
Closest named color: Kelley Green (#009337). oklch(57.9% 0.148 145.9), rgb(49, 144, 63).
Aa
Black text reads best on this color (5.19:1).
About this color
#31903F is a medium-dark, vivid green. In OKLCH its lightness is 58%, its chroma 0.148 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.022 away. Black text reads best on it, at 5.19:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 5.19:1 |
| White text | 4.04:1 |
Values
| HEX | #31903F |
| RGB | rgb(49, 144, 63) |
| HSL | hsl(129, 49%, 38%) |
| OKLCH | oklch(57.9% 0.148 145.9) |
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 #31903F | 4.04:1 | AA large text | Lc -72.8 | Content text, not long reading |
| Black text on #31903F | 5.19:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #31903F text on white | 4.04:1 | AA large text | Lc 67.3 | Content text, not long reading |
| #31903F text on black | 5.19:1 | AA | Lc -34.3 | 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 600.
-
Step 50
50
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EEE2
oklch(93.7% 0.02 145.4)
-
Step 200
200
#CAE0CB
oklch(88.5% 0.037 146.5)
-
Step 300
300
#A6CDA7
oklch(81% 0.067 145.6)
-
Step 400
400
#74B278
oklch(70.6% 0.105 145.9)
-
Step 500
500
#4B9F54
oklch(63.2% 0.137 145.9)
-
Step 600
600 (this color)
#31903F
oklch(57.9% 0.148 145.9)
-
Step 700
700
#19742A
oklch(49.1% 0.137 145.8)
-
Step 800
800
#195F24
oklch(42.8% 0.114 145.8)
-
Step 900
900
#1C4E22
oklch(37.8% 0.09 145.7)
-
Step 950
950
#122E15
oklch(27.2% 0.057 146)
#31903F 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) | #928337 | 0.113 |
| Deuteranopia (no green cones) | #867B45 | 0.112 |
| Tritanopia (no blue cones) | #168D7E | 0.088 |
| Achromatopsia (no color) | #7E7E7E | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31903F
#31903F
oklch(57.9% 0.148 145.9)
- #A557A8
#A557A8
oklch(57.9% 0.147 325.9)
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 #31903F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.022
- Forest Green #228B22 ΔE 0.031
- Fern Green #548D44 ΔE 0.032
- Irish Green #019529 ΔE 0.034
- Emerald Green #028F1E ΔE 0.037
- Sea Green #2E8B57 ΔE 0.037
- Light Forest Green #4F9153 ΔE 0.038
- Sap Green #5C8B15 ΔE 0.041
Use #31903F 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.