#1B5603
Closest named color: Forest (#0B5509). oklch(39.9% 0.124 139.3), rgb(27, 86, 3).
Aa
White text reads best on this color (8.82:1).
About this color
#1B5603 is a dark, moderately saturated green. In OKLCH its lightness is 40%, its chroma 0.124 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest (#0B5509), ΔE 0.010 away. White text reads best on it, at 8.82:1.
| Hue family | Greens |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Forest (#0B5509) |
| Black text | 2.37:1 |
| White text | 8.82:1 |
Values
| HEX | #1B5603 |
| RGB | rgb(27, 86, 3) |
| HSL | hsl(103, 93%, 17%) |
| OKLCH | oklch(39.9% 0.124 139.3) |
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 #1B5603 | 8.82:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #1B5603 | 2.37:1 | Fails | Lc 14.2 | Not readable |
| #1B5603 text on white | 8.82:1 | AAA | Lc 89.8 | Fine for body text |
| #1B5603 text on black | 2.37:1 | Fails | Lc -12.5 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E1EFDE
oklch(93.7% 0.027 140.2)
-
Step 200
200
#C8E2C2
oklch(88.5% 0.051 139.8)
-
Step 300
300
#A2D096
oklch(81% 0.093 139.2)
-
Step 400
400
#6CB658
oklch(70.6% 0.149 139.3)
-
Step 500
500
#3FA318
oklch(63.2% 0.19 139.2)
-
Step 600
600
#2E8A00
oklch(55.7% 0.176 139.3)
-
Step 700
700
#257400
oklch(49.1% 0.156 139.3)
-
Step 800
800
#1D5F00
oklch(42.7% 0.135 139.3)
-
Step 900
900 (this color)
#1B5603
oklch(39.9% 0.124 139.3)
-
Step 950
950
#0E2F04
oklch(27% 0.079 139.3)
#1B5603 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) | #594D00 | 0.083 |
| Deuteranopia (no green cones) | #52480F | 0.083 |
| Tritanopia (no blue cones) | #135348 | 0.084 |
| Achromatopsia (no color) | #4A4A4A | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5603
#1B5603
oklch(39.9% 0.124 139.3)
- #632C71
#632C71
oklch(39.9% 0.125 319.1)
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 #1B5603, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest #0B5509 ΔE 0.010
- Deep Green #02590F ΔE 0.013
- Navy Green #35530A ΔE 0.028
- Bottle Green #044A05 ΔE 0.044
- Dark Green #006400 ΔE 0.045
- Darkgreen #054907 ΔE 0.048
- Spruce #0A5F38 ΔE 0.051
- British Racing Green #05480D ΔE 0.052
Use #1B5603 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.