#255643
Closest named color: Dark Blue Green (#005249). oklch(41.3% 0.063 165.6), rgb(37, 86, 67).
Aa
White text reads best on this color (8.43:1).
About this color
#255643 is a dark, muted green. In OKLCH its lightness is 41%, its chroma 0.063 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.029 away. White text reads best on it, at 8.43:1.
| Hue family | Greens |
| Lightness | dark (41%) |
| Chroma | muted (0.063) |
| Temperature | in between |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.49:1 |
| White text | 8.43:1 |
Values
| HEX | #255643 |
| RGB | rgb(37, 86, 67) |
| HSL | hsl(157, 40%, 24%) |
| OKLCH | oklch(41.3% 0.063 165.6) |
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 #255643 | 8.43:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #255643 | 2.49:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #255643 text on white | 8.43:1 | AAA | Lc 88.9 | Fine for body text |
| #255643 text on black | 2.49:1 | Fails | Lc -13.3 | 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 800.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CDDED6
oklch(88.6% 0.021 166)
-
Step 300
300
#ABC9BB
oklch(81% 0.038 165.6)
-
Step 400
400
#7EAD98
oklch(70.8% 0.059 165.4)
-
Step 500
500
#5B987F
oklch(63.1% 0.075 166)
-
Step 600
600
#3F8268
oklch(55.5% 0.08 165.9)
-
Step 700
700
#306E56
oklch(49% 0.076 165.5)
-
Step 800
800 (this color)
#255643
oklch(41.3% 0.063 165.6)
-
Step 900
900
#264A3B
oklch(37.7% 0.05 165.1)
-
Step 950
950
#172B23
oklch(26.9% 0.03 166.8)
#255643 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) | #545042 | 0.062 |
| Deuteranopia (no green cones) | #4D4B44 | 0.060 |
| Tritanopia (no blue cones) | #125651 | 0.025 |
| Achromatopsia (no color) | #4D4D4D | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255643
#255643
oklch(41.3% 0.063 165.6)
- #643D53
#643D53
oklch(41.4% 0.063 345.3)
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 #255643, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.037
- Pine #2B5D34 ΔE 0.038
- Spruce #0A5F38 ΔE 0.042
- Deep Teal #00555A ΔE 0.042
- Dark Green Blue #1F6357 ΔE 0.044
- Dark Teal #014D4E ΔE 0.047
- Petrol #005F6A ΔE 0.061
Use #255643 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.