#1B5437
Closest named color: Dark Blue Green (#005249). oklch(40% 0.077 157.6), rgb(27, 84, 55).
Aa
White text reads best on this color (8.86:1).
About this color
#1B5437 is a dark, moderately saturated green. In OKLCH its lightness is 40%, its chroma 0.077 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.033 away. White text reads best on it, at 8.86:1.
| Hue family | Greens |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.36:1 |
| White text | 8.86:1 |
Values
| HEX | #1B5437 |
| RGB | rgb(27, 84, 55) |
| HSL | hsl(149, 51%, 22%) |
| OKLCH | oklch(40% 0.077 157.6) |
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 #1B5437 | 8.86:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #1B5437 | 2.36:1 | Fails | Lc 13.9 | Not readable |
| #1B5437 text on white | 8.86:1 | AAA | Lc 90.0 | Preferred for body text |
| #1B5437 text on black | 2.36:1 | Fails | Lc -12.2 | 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
#F1F7F3
oklch(97.1% 0.008 157.1)
-
Step 100
100
#E1EDE5
oklch(93.5% 0.017 156.9)
-
Step 200
200
#C9E0D1
oklch(88.5% 0.032 157.1)
-
Step 300
300
#A2CCB2
oklch(80.8% 0.058 157.7)
-
Step 400
400
#6DB28A
oklch(70.6% 0.092 157.6)
-
Step 500
500
#3E9F6D
oklch(63.2% 0.119 157.6)
-
Step 600
600
#098955
oklch(55.6% 0.128 157.8)
-
Step 700
700
#007446
oklch(49.2% 0.116 157.5)
-
Step 800
800
#035F39
oklch(42.8% 0.1 157.6)
-
Step 900
900 (this color)
#1B5437
oklch(40% 0.077 157.6)
-
Step 950
950
#0E2E1D
oklch(27.2% 0.05 157.3)
#1B5437 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) | #534D35 | 0.071 |
| Deuteranopia (no green cones) | #4C4839 | 0.070 |
| Tritanopia (no blue cones) | #00534C | 0.036 |
| Achromatopsia (no color) | #4A4A4A | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5437
#1B5437
oklch(40% 0.077 157.6)
- #623656
#623656
oklch(39.9% 0.078 338)
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 #1B5437, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.033
- Pine #2B5D34 ΔE 0.036
- Spruce #0A5F38 ΔE 0.036
- Evergreen #05472A ΔE 0.048
- Navy Green #35530A ΔE 0.049
- Pine Green #0A481E ΔE 0.051
- Dark Teal #014D4E ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.053
Use #1B5437 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.