#256357
Closest named color: Dark Green Blue (#1F6357). oklch(45.6% 0.067 178.3), rgb(37, 99, 87).
Aa
White text reads best on this color (6.99:1).
About this color
#256357 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.067 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.004 away. White text reads best on it, at 6.99:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #256357 |
| RGB | rgb(37, 99, 87) |
| HSL | hsl(168, 46%, 27%) |
| OKLCH | oklch(45.6% 0.067 178.3) |
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 #256357 | 6.99:1 | AA | Lc -89.0 | Fine for body text |
| Black text on #256357 | 3.00:1 | AA large text | Lc 20.0 | Dividers and decoration only |
| #256357 text on white | 6.99:1 | AA | Lc 84.0 | Fine for body text |
| #256357 text on black | 3.00:1 | AA large text | Lc -17.9 | 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 800.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CBDED9
oklch(88.5% 0.021 178.3)
-
Step 300
300
#A7C9C1
oklch(80.9% 0.038 179.4)
-
Step 400
400
#75AEA1
oklch(70.8% 0.063 178.5)
-
Step 500
500
#4E998A
oklch(63% 0.079 179)
-
Step 600
600
#2C8473
oklch(55.7% 0.087 177.6)
-
Step 700
700
#1D6F61
oklch(49% 0.08 178.8)
-
Step 800
800 (this color)
#256357
oklch(45.6% 0.067 178.3)
-
Step 900
900
#1E4B42
oklch(37.8% 0.052 178.3)
-
Step 950
950
#132C26
oklch(27.1% 0.033 176.2)
#256357 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) | #5F5D57 | 0.070 |
| Deuteranopia (no green cones) | #565658 | 0.068 |
| Tritanopia (no blue cones) | #00645F | 0.018 |
| Achromatopsia (no color) | #595959 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256357
#256357
oklch(45.6% 0.067 178.3)
- #754756
#754756
oklch(45.6% 0.066 359)
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 #256357, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.004
- Dark Aqua #05696B ΔE 0.032
- Petrol #005F6A ΔE 0.040
- Pine #2B5D34 ΔE 0.050
- Spruce #0A5F38 ΔE 0.052
- Dark Aquamarine #017371 ΔE 0.054
- Deep Teal #00555A ΔE 0.054
- Deep Turquoise #017374 ΔE 0.056
Use #256357 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.