#23524F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.5% 0.051 189.7), rgb(35, 82, 79).
Aa
White text reads best on this color (8.78:1).
About this color
#23524F is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.051 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.015 away. White text reads best on it, at 8.78:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.39:1 |
| White text | 8.78:1 |
Values
| HEX | #23524F |
| RGB | rgb(35, 82, 79) |
| HSL | hsl(176, 40%, 23%) |
| OKLCH | oklch(40.5% 0.051 189.7) |
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 #23524F | 8.78:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #23524F | 2.39:1 | Fails | Lc 14.1 | Not readable |
| #23524F text on white | 8.78:1 | AAA | Lc 89.9 | Fine for body text |
| #23524F text on black | 2.39:1 | Fails | Lc -12.4 | 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
#ACC7C5
oklch(80.9% 0.029 191.1)
-
Step 400
400
#7EABA7
oklch(70.8% 0.049 189.3)
-
Step 500
500
#5B9691
oklch(63.1% 0.062 188.8)
-
Step 600
600
#3F807C
oklch(55.6% 0.067 190.1)
-
Step 700
700
#316C68
oklch(49.1% 0.062 189.4)
-
Step 800
800 (this color)
#23524F
oklch(40.5% 0.051 189.7)
-
Step 900
900
#264946
oklch(37.8% 0.041 188.5)
-
Step 950
950
#172B29
oklch(27.1% 0.026 187.7)
#23524F 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) | #4E4E4F | 0.055 |
| Deuteranopia (no green cones) | #46484F | 0.052 |
| Tritanopia (no blue cones) | #025451 | 0.017 |
| Achromatopsia (no color) | #4B4B4B | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23524F
#23524F
oklch(40.5% 0.051 189.7)
- #613D43
#613D43
oklch(40.4% 0.051 8.7)
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 #23524F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.015
- Deep Teal #00555A ΔE 0.022
- Dark Blue Green #005249 ΔE 0.023
- Dark Teal #014D4E ΔE 0.028
- Charcoal #264653 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.050
- Petrol #005F6A ΔE 0.051
- Dark Green Blue #1F6357 ΔE 0.053
Use #23524F 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.