#1B4901
Closest named color: Bottle Green (#044A05). oklch(35.9% 0.109 137.7), rgb(27, 73, 1).
Aa
White text reads best on this color (10.49:1).
About this color
#1B4901 is a dark, moderately saturated green. In OKLCH its lightness is 36%, its chroma 0.109 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bottle Green (#044A05), ΔE 0.013 away. White text reads best on it, at 10.49:1.
| Hue family | Greens |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Bottle Green (#044A05) |
| Black text | 2.00:1 |
| White text | 10.49:1 |
Values
| HEX | #1B4901 |
| RGB | rgb(27, 73, 1) |
| HSL | hsl(98, 97%, 15%) |
| OKLCH | oklch(35.9% 0.109 137.7) |
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 #1B4901 | 10.49:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #1B4901 | 2.00:1 | Fails | Lc 9.9 | Not readable |
| #1B4901 text on white | 10.49:1 | AAA | Lc 94.0 | Preferred for body text |
| #1B4901 text on black | 2.00:1 | Fails | Lc -8.5 | 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
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E2EEDF
oklch(93.6% 0.024 139.4)
-
Step 200
200
#CBE1C4
oklch(88.6% 0.046 138.1)
-
Step 300
300
#A7CE9A
oklch(81% 0.083 138)
-
Step 400
400
#77B360
oklch(70.6% 0.13 137.6)
-
Step 500
500
#51A02D
oklch(63.2% 0.168 137.7)
-
Step 600
600
#388900
oklch(55.7% 0.171 137.7)
-
Step 700
700
#2E7300
oklch(49.1% 0.151 137.7)
-
Step 800
800
#245E00
oklch(42.6% 0.131 137.7)
-
Step 900
900 (this color)
#1B4901
oklch(35.9% 0.109 137.7)
-
Step 950
950
#142E08
oklch(27.1% 0.07 137.4)
#1B4901 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) | #4C4200 | 0.070 |
| Deuteranopia (no green cones) | #463E0A | 0.069 |
| Tritanopia (no blue cones) | #17463D | 0.077 |
| Achromatopsia (no color) | #3F3F3F | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B4901
#1B4901
oklch(35.9% 0.109 137.7)
- #532661
#532661
oklch(35.8% 0.109 317.5)
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 #1B4901, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bottle Green #044A05 ΔE 0.013
- Darkgreen #054907 ΔE 0.013
- British Racing Green #05480D ΔE 0.015
- Forrest Green #154406 ΔE 0.019
- Racing Green #014600 ΔE 0.021
- Pine Green #0A481E ΔE 0.026
- Hunter Green #0B4008 ΔE 0.036
- Forest #0B5509 ΔE 0.038
Use #1B4901 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.