#256F72
Closest named color: Deep Turquoise (#017374). oklch(49.8% 0.071 199), rgb(37, 111, 114).
Aa
White text reads best on this color (5.84:1).
About this color
#256F72 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 50%, its chroma 0.071 and its hue 199°. 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 5.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.59:1 |
| White text | 5.84:1 |
Values
| HEX | #256F72 |
| RGB | rgb(37, 111, 114) |
| HSL | hsl(182, 51%, 30%) |
| OKLCH | oklch(49.8% 0.071 199) |
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 #256F72 | 5.84:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #256F72 | 3.59:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #256F72 text on white | 5.84:1 | AA | Lc 79.0 | Fine for body text |
| #256F72 text on black | 3.59:1 | AA large text | Lc -22.8 | 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
#CBDDDE
oklch(88.4% 0.019 200.8)
-
Step 300
300
#A8C8C9
oklch(81% 0.034 198.8)
-
Step 400
400
#77ACAD
oklch(70.8% 0.056 197.5)
-
Step 500
500
#519799
oklch(63.2% 0.071 197.9)
-
Step 600
600
#318184
oklch(55.6% 0.077 198.6)
-
Step 700
700 (this color)
#256F72
oklch(49.8% 0.071 199)
-
Step 800
800
#1F595B
oklch(42.8% 0.059 198.4)
-
Step 900
900
#20494B
oklch(37.7% 0.046 199.6)
-
Step 950
950
#142B2C
oklch(27.1% 0.029 199.2)
#256F72 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) | #676A72 | 0.073 |
| Deuteranopia (no green cones) | #5B6172 | 0.068 |
| Tritanopia (no blue cones) | #007370 | 0.018 |
| Achromatopsia (no color) | #656565 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256F72
#256F72
oklch(49.8% 0.071 199)
- #875253
#875253
oklch(49.9% 0.071 18.7)
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 #256F72, 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 0.017
- Dark Aqua #05696B ΔE 0.027
- Deep Aqua #08787F ΔE 0.029
- Bluegreen #017A79 ΔE 0.033
- Teal #008080 ΔE 0.050
- Slate #516572 ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.051
Use #256F72 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.