#256555
Closest named color: Dark Green Blue (#1F6357). oklch(46.1% 0.07 173.8), rgb(37, 101, 85).
Aa
White text reads best on this color (6.83:1).
About this color
#256555 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.070 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.009 away. White text reads best on it, at 6.83:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #256555 |
| RGB | rgb(37, 101, 85) |
| HSL | hsl(165, 46%, 27%) |
| OKLCH | oklch(46.1% 0.07 173.8) |
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 #256555 | 6.83:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #256555 | 3.07:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #256555 text on white | 6.83:1 | AA | Lc 83.4 | Fine for body text |
| #256555 text on black | 3.07:1 | AA large text | Lc -18.6 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CDDDD8
oklch(88.4% 0.018 175.3)
-
Step 300
300
#ABC8BF
oklch(80.9% 0.034 174.7)
-
Step 400
400
#7DAC9E
oklch(70.7% 0.054 174.3)
-
Step 500
500
#5A9886
oklch(63.2% 0.07 173.4)
-
Step 600
600
#3D8270
oklch(55.6% 0.076 174.1)
-
Step 700
700 (this color)
#256555
oklch(46.1% 0.07 173.8)
-
Step 800
800
#28594C
oklch(42.6% 0.058 173.8)
-
Step 900
900
#264A40
oklch(37.9% 0.045 173.8)
-
Step 950
950
#172B25
oklch(27% 0.028 173)
#256555 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) | #625F54 | 0.073 |
| Deuteranopia (no green cones) | #585856 | 0.069 |
| Tritanopia (no blue cones) | #006660 | 0.021 |
| Achromatopsia (no color) | #5B5B5B | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256555
#256555
oklch(46.1% 0.07 173.8)
- #77475B
#77475B
oklch(46% 0.071 353.7)
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 #256555, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.009
- Dark Aqua #05696B ΔE 0.034
- Petrol #005F6A ΔE 0.047
- Pine #2B5D34 ΔE 0.048
- Spruce #0A5F38 ΔE 0.050
- Dark Aquamarine #017371 ΔE 0.051
- Deep Turquoise #017374 ΔE 0.054
- Deep Teal #00555A ΔE 0.062
Use #256555 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.