#256F6F
Closest named color: Deep Turquoise (#017374). oklch(49.7% 0.071 195.1), rgb(37, 111, 111).
Aa
White text reads best on this color (5.86:1).
About this color
#256F6F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 50%, its chroma 0.071 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.016 away. White text reads best on it, at 5.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.58:1 |
| White text | 5.86:1 |
Values
| HEX | #256F6F |
| RGB | rgb(37, 111, 111) |
| HSL | hsl(180, 50%, 29%) |
| OKLCH | oklch(49.7% 0.071 195.1) |
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 #256F6F | 5.86:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #256F6F | 3.58:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #256F6F text on white | 5.86:1 | AA | Lc 79.1 | Fine for body text |
| #256F6F text on black | 3.58:1 | AA large text | Lc -22.7 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CBDDDD
oklch(88.4% 0.019 196.8)
-
Step 300
300
#A8C8C7
oklch(80.9% 0.034 194.2)
-
Step 400
400
#77ACAB
oklch(70.7% 0.056 194.5)
-
Step 500
500
#519797
oklch(63.1% 0.071 195.5)
-
Step 600
600
#318181
oklch(55.5% 0.077 195.2)
-
Step 700
700 (this color)
#256F6F
oklch(49.7% 0.071 195.1)
-
Step 800
800
#1F5959
oklch(42.7% 0.059 195.2)
-
Step 900
900
#204949
oklch(37.6% 0.046 195.4)
-
Step 950
950
#142B2B
oklch(27% 0.029 195.6)
#256F6F 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) | #686A6F | 0.075 |
| Deuteranopia (no green cones) | #5C6170 | 0.070 |
| Tritanopia (no blue cones) | #00736F | 0.017 |
| Achromatopsia (no color) | #656565 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256F6F
#256F6F
oklch(49.7% 0.071 195.1)
- #865155
#865155
oklch(49.7% 0.071 15.1)
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 #256F6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.016
- Dark Aquamarine #017371 ΔE 0.016
- Dark Aqua #05696B ΔE 0.026
- Deep Aqua #08787F ΔE 0.031
- Bluegreen #017A79 ΔE 0.033
- Dark Green Blue #1F6357 ΔE 0.048
- Teal #008080 ΔE 0.051
- Slate #516572 ΔE 0.052
Use #256F6F 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.