#1F8A51
Closest named color: Sea Green (#2E8B57). oklch(56.1% 0.129 154.4), rgb(31, 138, 81).
Aa
Black text reads best on this color (4.81:1).
About this color
#1F8A51 is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.129 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.013 away. Black text reads best on it, at 4.81:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.129) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.81:1 |
| White text | 4.36:1 |
Values
| HEX | #1F8A51 |
| RGB | rgb(31, 138, 81) |
| HSL | hsl(148, 63%, 33%) |
| OKLCH | oklch(56.1% 0.129 154.4) |
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 #1F8A51 | 4.36:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #1F8A51 | 4.81:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #1F8A51 text on white | 4.36:1 | AA large text | Lc 69.8 | Content text, not long reading |
| #1F8A51 text on black | 4.81:1 | AA | Lc -31.9 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E2EDE5
oklch(93.6% 0.016 154.5)
-
Step 200
200
#C9E0D0
oklch(88.5% 0.033 155.3)
-
Step 300
300
#A4CCB0
oklch(80.9% 0.058 154.4)
-
Step 400
400
#70B287
oklch(70.7% 0.093 154.7)
-
Step 500
500
#459E68
oklch(63% 0.119 154.4)
-
Step 600
600 (this color)
#1F8A51
oklch(56.1% 0.129 154.4)
-
Step 700
700
#097440
oklch(49.2% 0.12 154.2)
-
Step 800
800
#105E35
oklch(42.6% 0.099 154.4)
-
Step 900
900
#184D2E
oklch(37.6% 0.077 154.3)
-
Step 950
950
#102D1B
oklch(26.9% 0.049 154.2)
#1F8A51 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) | #8A7E4D | 0.114 |
| Deuteranopia (no green cones) | #7D7555 | 0.112 |
| Tritanopia (no blue cones) | #00887C | 0.065 |
| Achromatopsia (no color) | #797979 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F8A51
#1F8A51
oklch(56.1% 0.129 154.4)
- #A15593
#A15593
oklch(56.1% 0.128 334.4)
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 #1F8A51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.013
- Jungle Green #048243 ΔE 0.030
- Viridian #1E9167 ΔE 0.032
- Fern Green #548D44 ΔE 0.043
- Light Forest Green #4F9153 ΔE 0.043
- Kelley Green #009337 ΔE 0.048
- Dark Sage #598556 ΔE 0.049
- Forest Green #228B22 ΔE 0.050
Use #1F8A51 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.