#23524D
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.4% 0.052 186.1), rgb(35, 82, 77).
Aa
White text reads best on this color (8.80:1).
About this color
#23524D is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.052 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.016 away. White text reads best on it, at 8.80:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.38:1 |
| White text | 8.80:1 |
Values
| HEX | #23524D |
| RGB | rgb(35, 82, 77) |
| HSL | hsl(174, 40%, 23%) |
| OKLCH | oklch(40.4% 0.052 186.1) |
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 #23524D | 8.80:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #23524D | 2.38:1 | Fails | Lc 14.0 | Not readable |
| #23524D text on white | 8.80:1 | AAA | Lc 90.0 | Fine for body text |
| #23524D text on black | 2.38:1 | Fails | Lc -12.3 | Not readable |
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 800.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CDDDDB
oklch(88.5% 0.017 187.8)
-
Step 300
300
#ACC7C3
oklch(80.8% 0.03 185.8)
-
Step 400
400
#7EABA5
oklch(70.7% 0.049 185.9)
-
Step 500
500
#5C968F
oklch(63.1% 0.062 186)
-
Step 600
600
#408079
oklch(55.5% 0.067 186.2)
-
Step 700
700
#316C66
oklch(49% 0.062 186.5)
-
Step 800
800 (this color)
#23524D
oklch(40.4% 0.052 186.1)
-
Step 900
900
#274945
oklch(37.8% 0.041 186)
-
Step 950
950
#172B28
oklch(27.1% 0.027 183.8)
#23524D 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) | #4E4E4D | 0.055 |
| Deuteranopia (no green cones) | #46484E | 0.052 |
| Tritanopia (no blue cones) | #045450 | 0.017 |
| Achromatopsia (no color) | #4A4A4A | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23524D
#23524D
oklch(40.4% 0.052 186.1)
- #613D44
#613D44
oklch(40.4% 0.052 6.9)
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 #23524D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.016
- Dark Blue Green #005249 ΔE 0.022
- Deep Teal #00555A ΔE 0.024
- Dark Teal #014D4E ΔE 0.028
- Charcoal #264653 ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.053
- Petrol #005F6A ΔE 0.053
- Dark Green Blue #1F6357 ΔE 0.053
Use #23524D 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.