#256F75
Closest named color: Deep Turquoise (#017374). oklch(49.9% 0.072 202.8), rgb(37, 111, 117).
Aa
White text reads best on this color (5.81:1).
About this color
#256F75 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 50%, its chroma 0.072 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.017 away. White text reads best on it, at 5.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.60:1 |
| White text | 5.81:1 |
Values
| HEX | #256F75 |
| RGB | rgb(37, 111, 117) |
| HSL | hsl(185, 52%, 30%) |
| OKLCH | oklch(49.9% 0.072 202.8) |
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 #256F75 | 5.81:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #256F75 | 3.60:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #256F75 text on white | 5.81:1 | AA | Lc 78.8 | Fine for body text |
| #256F75 text on black | 3.60:1 | AA large text | Lc -23.0 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A8C8CA
oklch(81% 0.034 201.2)
-
Step 400
400
#77ABB0
oklch(70.7% 0.055 203.5)
-
Step 500
500
#51969C
oklch(63% 0.07 202.9)
-
Step 600
600
#318187
oklch(55.7% 0.077 202.1)
-
Step 700
700 (this color)
#256F75
oklch(49.9% 0.072 202.8)
-
Step 800
800
#1F585D
oklch(42.6% 0.059 203.3)
-
Step 900
900
#20494C
oklch(37.7% 0.046 201.8)
-
Step 950
950
#142B2D
oklch(27.1% 0.029 202.9)
#256F75 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) | #666A75 | 0.071 |
| Deuteranopia (no green cones) | #5A6175 | 0.066 |
| Tritanopia (no blue cones) | #007371 | 0.020 |
| Achromatopsia (no color) | #656565 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256F75
#256F75
oklch(49.9% 0.072 202.8)
- #875250
#875250
oklch(49.8% 0.072 22.3)
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 #256F75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.017
- Dark Aquamarine #017371 ΔE 0.020
- Deep Aqua #08787F ΔE 0.028
- Dark Aqua #05696B ΔE 0.029
- Bluegreen #017A79 ΔE 0.033
- Slate #516572 ΔE 0.049
- Sea Blue #047495 ΔE 0.049
- Ocean #017B92 ΔE 0.050
Use #256F75 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.