#277B21
Closest named color: Tree Green (#2A7E19). oklch(51.4% 0.148 142.2), rgb(39, 123, 33).
Aa
White text reads best on this color (5.32:1).
About this color
#277B21 is a medium-dark, vivid green. In OKLCH its lightness is 51%, its chroma 0.148 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tree Green (#2A7E19), ΔE 0.012 away. White text reads best on it, at 5.32:1.
| Hue family | Greens |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Tree Green (#2A7E19) |
| Black text | 3.94:1 |
| White text | 5.32:1 |
Values
| HEX | #277B21 |
| RGB | rgb(39, 123, 33) |
| HSL | hsl(116, 58%, 31%) |
| OKLCH | oklch(51.4% 0.148 142.2) |
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 #277B21 | 5.32:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #277B21 | 3.94:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #277B21 text on white | 5.32:1 | AA | Lc 76.1 | Fine for body text |
| #277B21 text on black | 3.94:1 | AA large text | Lc -25.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#CBE0C8
oklch(88.4% 0.039 141.7)
-
Step 300
300
#A7CDA2
oklch(80.9% 0.072 141.8)
-
Step 400
400
#75B36F
oklch(70.7% 0.116 142.2)
-
Step 500
500
#4E9F48
oklch(63.1% 0.147 142.3)
-
Step 600
600
#2D8927
oklch(55.5% 0.159 142.2)
-
Step 700
700 (this color)
#277B21
oklch(51.4% 0.148 142.2)
-
Step 800
800
#1C5F18
oklch(42.8% 0.123 142.3)
-
Step 900
900
#1E4E1B
oklch(37.8% 0.096 142.4)
-
Step 950
950
#132E11
oklch(27.1% 0.061 142.4)
#277B21 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) | #7E6F13 | 0.105 |
| Deuteranopia (no green cones) | #74682A | 0.105 |
| Tritanopia (no blue cones) | #157769 | 0.096 |
| Achromatopsia (no color) | #6B6B6B | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #277B21
#277B21
oklch(51.4% 0.148 142.2)
- #8D4498
#8D4498
oklch(51.3% 0.148 322.2)
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 #277B21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tree Green #2A7E19 ΔE 0.012
- Dark Grass Green #388004 ΔE 0.026
- Green #008000 ΔE 0.029
- Jungle Green #048243 ΔE 0.034
- Forest Green #228B22 ΔE 0.049
- Emerald Green #028F1E ΔE 0.061
- Olive Green #677A04 ΔE 0.065
- Sea Green #2E8B57 ΔE 0.069
Use #277B21 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.