#256F4B
Closest named color: Dark Green Blue (#1F6357). oklch(48.6% 0.094 158.5), rgb(37, 111, 75).
Aa
White text reads best on this color (6.07:1).
About this color
#256F4B is a medium-dark, moderately saturated green. In OKLCH its lightness is 49%, its chroma 0.094 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.049 away. White text reads best on it, at 6.07:1.
| Hue family | Greens |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.45:1 |
| White text | 6.07:1 |
Values
| HEX | #256F4B |
| RGB | rgb(37, 111, 75) |
| HSL | hsl(151, 50%, 29%) |
| OKLCH | oklch(48.6% 0.094 158.5) |
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 #256F4B | 6.07:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #256F4B | 3.45:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #256F4B text on white | 6.07:1 | AA | Lc 80.1 | Fine for body text |
| #256F4B text on black | 3.45:1 | AA large text | Lc -21.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3EDE7
oklch(93.7% 0.013 159.9)
-
Step 200
200
#CCDED3
oklch(88.4% 0.024 159.1)
-
Step 300
300
#A9CAB6
oklch(80.9% 0.045 158.6)
-
Step 400
400
#79AF90
oklch(70.7% 0.073 158.7)
-
Step 500
500
#549B74
oklch(63.2% 0.094 158.1)
-
Step 600
600
#35855D
oklch(55.6% 0.101 158.6)
-
Step 700
700 (this color)
#256F4B
oklch(48.6% 0.094 158.5)
-
Step 800
800
#225C3F
oklch(42.8% 0.078 158.6)
-
Step 900
900
#224B35
oklch(37.6% 0.06 158.2)
-
Step 950
950
#152C1F
oklch(27% 0.038 157.7)
#256F4B 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) | #6E6649 | 0.088 |
| Deuteranopia (no green cones) | #645F4D | 0.085 |
| Tritanopia (no blue cones) | #006E65 | 0.042 |
| Achromatopsia (no color) | #626262 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256F4B
#256F4B
oklch(48.6% 0.094 158.5)
- #814971
#814971
oklch(48.6% 0.093 338.5)
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 #256F4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.049
- Dark Olive Green #556B2F ΔE 0.052
- Dark Aquamarine #017371 ΔE 0.056
- Camo Green #526525 ΔE 0.056
- Pine #2B5D34 ΔE 0.057
- Spruce #0A5F38 ΔE 0.057
- Dark Aqua #05696B ΔE 0.060
- Deep Turquoise #017374 ΔE 0.060
Use #256F4B 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.