#31875D
Closest named color: Sea Green (#2E8B57). oklch(56% 0.106 158.7), rgb(49, 135, 93).
Aa
Black text reads best on this color (4.75:1).
About this color
#31875D is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.106 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.017 away. Black text reads best on it, at 4.75:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #31875D |
| RGB | rgb(49, 135, 93) |
| HSL | hsl(151, 47%, 36%) |
| OKLCH | oklch(56% 0.106 158.7) |
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 #31875D | 4.41:1 | AA large text | Lc -75.8 | Fine for body text |
| Black text on #31875D | 4.75:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #31875D text on white | 4.41:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #31875D text on black | 4.75:1 | AA | Lc -31.3 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3EDE6
oklch(93.7% 0.014 155.6)
-
Step 200
200
#CBDFD3
oklch(88.5% 0.027 159.5)
-
Step 300
300
#A8CAB5
oklch(80.8% 0.047 158.1)
-
Step 400
400
#77AF8F
oklch(70.6% 0.075 158.7)
-
Step 500
500
#509B73
oklch(63% 0.097 158.6)
-
Step 600
600 (this color)
#31875D
oklch(56% 0.106 158.7)
-
Step 700
700
#21714B
oklch(49% 0.098 158.5)
-
Step 800
800
#1E5C3E
oklch(42.6% 0.081 158.8)
-
Step 900
900
#1F4C35
oklch(37.8% 0.064 158.8)
-
Step 950
950
#142C1F
oklch(26.9% 0.039 158.6)
#31875D 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) | #867D5A | 0.099 |
| Deuteranopia (no green cones) | #7A7560 | 0.095 |
| Tritanopia (no blue cones) | #01867C | 0.048 |
| Achromatopsia (no color) | #787878 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31875D
#31875D
oklch(56% 0.106 158.7)
- #9C5B89
#9C5B89
oklch(56% 0.104 338.7)
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 #31875D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.017
- Viridian #1E9167 ΔE 0.029
- Dark Sage #598556 ΔE 0.035
- Jungle Green #048243 ΔE 0.044
- Light Forest Green #4F9153 ΔE 0.046
- Fern Green #548D44 ΔE 0.049
- Ocean Green #3D9973 ΔE 0.058
- Military Green #667C3E ΔE 0.059
Use #31875D 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.