#1B4121
Closest named color: Evergreen (#05472A). oklch(33.8% 0.07 147.2), rgb(27, 65, 33).
Aa
White text reads best on this color (11.50:1).
About this color
#1B4121 is a dark, moderately saturated green. In OKLCH its lightness is 34%, its chroma 0.070 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Evergreen (#05472A), ΔE 0.022 away. White text reads best on it, at 11.50:1.
| Hue family | Greens |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.070) |
| Temperature | in between |
| Nearest name | Evergreen (#05472A) |
| Black text | 1.82:1 |
| White text | 11.50:1 |
Values
| HEX | #1B4121 |
| RGB | rgb(27, 65, 33) |
| HSL | hsl(129, 41%, 18%) |
| OKLCH | oklch(33.8% 0.07 147.2) |
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 #1B4121 | 11.50:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #1B4121 | 1.82:1 | Fails | Lc 7.6 | Not readable |
| #1B4121 text on white | 11.50:1 | AAA | Lc 96.3 | Preferred for body text |
| #1B4121 text on black | 1.82:1 | Fails | Lc 0.0 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E4EDE4
oklch(93.7% 0.015 145.5)
-
Step 200
200
#CDDFCE
oklch(88.5% 0.03 146.9)
-
Step 300
300
#ABCAAD
oklch(80.8% 0.052 146.8)
-
Step 400
400
#7DAF82
oklch(70.6% 0.084 147.2)
-
Step 500
500
#5A9B62
oklch(63.1% 0.108 147)
-
Step 600
600
#3D8549
oklch(55.5% 0.117 147.3)
-
Step 700
700
#2F713A
oklch(49.1% 0.109 147.1)
-
Step 800
800
#285C30
oklch(42.7% 0.091 147)
-
Step 900
900 (this color)
#1B4121
oklch(33.8% 0.07 147.2)
-
Step 950
950
#172C19
oklch(26.9% 0.044 146.4)
#1B4121 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) | #423B1F | 0.057 |
| Deuteranopia (no green cones) | #3D3823 | 0.055 |
| Tritanopia (no blue cones) | #144039 | 0.040 |
| Achromatopsia (no color) | #393939 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B4121
#1B4121
oklch(33.8% 0.07 147.2)
- #4A294A
#4A294A
oklch(33.7% 0.071 327)
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 #1B4121, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Evergreen #05472A ΔE 0.022
- Pine Green #0A481E ΔE 0.027
- Hunter Green #0B4008 ΔE 0.033
- Forrest Green #154406 ΔE 0.034
- Pakistan Green #283618 ΔE 0.037
- Dark Olive #373E02 ΔE 0.040
- British Racing Green #05480D ΔE 0.041
- Darkgreen #054907 ΔE 0.046
Use #1B4121 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.