#00551B
Closest named color: Forest (#0B5509). oklch(39.2% 0.116 147.1), rgb(0, 85, 27).
Aa
White text reads best on this color (9.07:1).
About this color
#00551B is a dark, moderately saturated green. In OKLCH its lightness is 39%, its chroma 0.116 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest (#0B5509), ΔE 0.014 away. White text reads best on it, at 9.07:1.
| Hue family | Greens |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Forest (#0B5509) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #00551B |
| RGB | rgb(0, 85, 27) |
| HSL | hsl(139, 100%, 17%) |
| OKLCH | oklch(39.2% 0.116 147.1) |
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 #00551B | 9.07:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #00551B | 2.31:1 | Fails | Lc 13.7 | Not readable |
| #00551B text on white | 9.07:1 | AAA | Lc 90.3 | Preferred for body text |
| #00551B text on black | 2.31:1 | Fails | Lc -12.0 | Not readable |
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 900.
-
Step 50
50
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#DFEFE0
oklch(93.6% 0.026 147.1)
-
Step 200
200
#C5E2C7
oklch(88.4% 0.048 147.1)
-
Step 300
300
#9BD0A0
oklch(80.8% 0.087 147.2)
-
Step 400
400
#5FB86C
oklch(70.8% 0.139 147.1)
-
Step 500
500
#1CA542
oklch(63.2% 0.178 147.1)
-
Step 600
600
#008B32
oklch(55.5% 0.164 147.3)
-
Step 700
700
#007528
oklch(49% 0.145 147.1)
-
Step 800
800
#006020
oklch(42.6% 0.126 147.3)
-
Step 900
900 (this color)
#00551B
oklch(39.2% 0.116 147.1)
-
Step 950
950
#05300F
oklch(27.2% 0.074 147.2)
#00551B 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) | #564C14 | 0.090 |
| Deuteranopia (no green cones) | #4E4620 | 0.090 |
| Tritanopia (no blue cones) | #005349 | 0.070 |
| Achromatopsia (no color) | #494949 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00551B
#00551B
oklch(39.2% 0.116 147.1)
- #642A65
#642A65
oklch(39% 0.116 326.9)
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 #00551B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest #0B5509 ΔE 0.014
- Deep Green #02590F ΔE 0.019
- Navy Green #35530A ΔE 0.036
- Bottle Green #044A05 ΔE 0.037
- Darkgreen #054907 ΔE 0.040
- British Racing Green #05480D ΔE 0.043
- Spruce #0A5F38 ΔE 0.044
- Pine Green #0A481E ΔE 0.045
Use #00551B 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.