#1B4A01
Closest named color: Bottle Green (#044A05). oklch(36.2% 0.11 137.8), rgb(27, 74, 1).
Aa
White text reads best on this color (10.36:1).
About this color
#1B4A01 is a dark, moderately saturated green. In OKLCH its lightness is 36%, its chroma 0.110 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 10.36:1.
| Hue family | Greens |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Bottle Green (#044A05) |
| Black text | 2.02:1 |
| White text | 10.36:1 |
Values
| HEX | #1B4A01 |
| RGB | rgb(27, 74, 1) |
| HSL | hsl(99, 97%, 15%) |
| OKLCH | oklch(36.2% 0.11 137.8) |
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 #1B4A01 | 10.36:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #1B4A01 | 2.02:1 | Fails | Lc 10.2 | Not readable |
| #1B4A01 text on white | 10.36:1 | AAA | Lc 93.7 | Preferred for body text |
| #1B4A01 text on black | 2.02:1 | Fails | Lc -8.8 | 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
#CBE1C3
oklch(88.5% 0.047 137.3)
-
Step 300
300
#A7CE99
oklch(81% 0.084 137.5)
-
Step 400
400
#76B45F
oklch(70.8% 0.133 137.8)
-
Step 500
500
#50A02C
oklch(63.1% 0.169 137.8)
-
Step 600
600
#378900
oklch(55.7% 0.172 137.9)
-
Step 700
700
#2D7300
oklch(49.1% 0.151 137.9)
-
Step 800
800
#245E00
oklch(42.6% 0.131 137.7)
-
Step 900
900 (this color)
#1B4A01
oklch(36.2% 0.11 137.8)
-
Step 950
950
#132E08
oklch(27% 0.07 138)
#1B4A01 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) | #4D4200 | 0.072 |
| Deuteranopia (no green cones) | #473F0A | 0.070 |
| Tritanopia (no blue cones) | #17473E | 0.078 |
| Achromatopsia (no color) | #404040 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B4A01
#1B4A01
oklch(36.2% 0.11 137.8)
- #552763
#552763
oklch(36.3% 0.11 317.7)
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 #1B4A01, 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 0.014
- British Racing Green #05480D ΔE 0.017
- Forrest Green #154406 ΔE 0.023
- Racing Green #014600 ΔE 0.023
- Pine Green #0A481E ΔE 0.028
- Forest #0B5509 ΔE 0.035
- Hunter Green #0B4008 ΔE 0.039
Use #1B4A01 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.