#256975
Closest named color: Dark Aqua (#05696B). oklch(48.4% 0.069 211.3), rgb(37, 105, 117).
Aa
White text reads best on this color (6.25:1).
About this color
#256975 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.069 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.023 away. White text reads best on it, at 6.25:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.35:1 |
| White text | 6.25:1 |
Values
| HEX | #256975 |
| RGB | rgb(37, 105, 117) |
| HSL | hsl(189, 52%, 30%) |
| OKLCH | oklch(48.4% 0.069 211.3) |
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 #256975 | 6.25:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #256975 | 3.35:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #256975 text on white | 6.25:1 | AA | Lc 80.9 | Fine for body text |
| #256975 text on black | 3.35:1 | AA large text | Lc -20.9 | 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 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
#CCDDE0
oklch(88.6% 0.019 209.4)
-
Step 300
300
#A9C7CD
oklch(80.9% 0.033 211.1)
-
Step 400
400
#79AAB4
oklch(70.7% 0.054 211.7)
-
Step 500
500
#5495A1
oklch(63.1% 0.069 210.8)
-
Step 600
600
#367F8C
oklch(55.6% 0.074 211)
-
Step 700
700 (this color)
#256975
oklch(48.4% 0.069 211.3)
-
Step 800
800
#235761
oklch(42.6% 0.057 212.2)
-
Step 900
900
#22484F
oklch(37.7% 0.045 211)
-
Step 950
950
#152A2E
oklch(26.9% 0.028 211.1)
#256975 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) | #5F6576 | 0.064 |
| Deuteranopia (no green cones) | #545D75 | 0.059 |
| Tritanopia (no blue cones) | #006E6D | 0.027 |
| Achromatopsia (no color) | #606060 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256975
#256975
oklch(48.4% 0.069 211.3)
- #814F46
#814F46
oklch(48.2% 0.07 30.8)
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 #256975, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.023
- Deep Turquoise #017374 ΔE 0.033
- Dark Aquamarine #017371 ΔE 0.035
- Petrol #005F6A ΔE 0.040
- Deep Aqua #08787F ΔE 0.044
- Slate #516572 ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.049
- Denim #3B638C ΔE 0.051
Use #256975 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.