#256A55
Closest named color: Dark Green Blue (#1F6357). oklch(47.5% 0.077 169.6), rgb(37, 106, 85).
Aa
White text reads best on this color (6.41:1).
About this color
#256A55 is a medium-dark, moderately saturated green. In OKLCH its lightness is 47%, its chroma 0.077 and its hue 170°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.025 away. White text reads best on it, at 6.41:1.
| Hue family | Greens |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #256A55 |
| RGB | rgb(37, 106, 85) |
| HSL | hsl(162, 48%, 28%) |
| OKLCH | oklch(47.5% 0.077 169.6) |
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 #256A55 | 6.41:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #256A55 | 3.27:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #256A55 text on white | 6.41:1 | AA | Lc 81.6 | Fine for body text |
| #256A55 text on black | 3.27:1 | AA large text | Lc -20.2 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CDDED7
oklch(88.6% 0.021 169.3)
-
Step 300
300
#AAC9BD
oklch(81% 0.037 170)
-
Step 400
400
#7BAD9B
oklch(70.7% 0.059 170.2)
-
Step 500
500
#579982
oklch(63.2% 0.077 169.3)
-
Step 600
600
#39836B
oklch(55.6% 0.083 169.2)
-
Step 700
700 (this color)
#256A55
oklch(47.5% 0.077 169.6)
-
Step 800
800
#255A49
oklch(42.6% 0.064 169.5)
-
Step 900
900
#244A3D
oklch(37.7% 0.049 169.2)
-
Step 950
950
#162B24
oklch(26.9% 0.03 170.6)
#256A55 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) | #676354 | 0.079 |
| Deuteranopia (no green cones) | #5D5C56 | 0.075 |
| Tritanopia (no blue cones) | #006B64 | 0.025 |
| Achromatopsia (no color) | #5F5F5F | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256A55
#256A55
oklch(47.5% 0.077 169.6)
- #7D4962
#7D4962
oklch(47.4% 0.078 350.2)
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 #256A55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.025
- Dark Aqua #05696B ΔE 0.037
- Dark Aquamarine #017371 ΔE 0.044
- Deep Turquoise #017374 ΔE 0.048
- Pine #2B5D34 ΔE 0.053
- Spruce #0A5F38 ΔE 0.054
- Petrol #005F6A ΔE 0.060
- Bluegreen #017A79 ΔE 0.062
Use #256A55 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.