#23504E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.9% 0.05 191.5), rgb(35, 80, 78).
Aa
White text reads best on this color (9.01:1).
About this color
#23504E is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.050 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.013 away. White text reads best on it, at 9.01:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.32:1 |
| White text | 9.01:1 |
Values
| HEX | #23504E |
| RGB | rgb(35, 80, 78) |
| HSL | hsl(177, 39%, 23%) |
| OKLCH | oklch(39.9% 0.05 191.5) |
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 #23504E | 9.01:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #23504E | 2.32:1 | Fails | Lc 13.4 | Not readable |
| #23504E text on white | 9.01:1 | AAA | Lc 90.6 | Preferred for body text |
| #23504E text on black | 2.32:1 | Fails | Lc -11.7 | 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 900.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDC
oklch(88.5% 0.022 189.5)
-
Step 300
300
#A6C9C6
oklch(81% 0.038 190)
-
Step 400
400
#74ADAA
oklch(70.7% 0.06 191.7)
-
Step 500
500
#4C9895
oklch(63.1% 0.076 192)
-
Step 600
600
#29837F
oklch(55.7% 0.083 190.8)
-
Step 700
700
#196E6B
oklch(49% 0.077 191.4)
-
Step 800
800
#195A58
oklch(42.7% 0.064 192.1)
-
Step 900
900 (this color)
#23504E
oklch(39.9% 0.05 191.5)
-
Step 950
950
#122B2A
oklch(26.9% 0.031 192.1)
#23504E 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) | #4C4C4E | 0.053 |
| Deuteranopia (no green cones) | #44474E | 0.048 |
| Tritanopia (no blue cones) | #04524F | 0.018 |
| Achromatopsia (no color) | #494949 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23504E
#23504E
oklch(39.9% 0.05 191.5)
- #5F3C41
#5F3C41
oklch(39.9% 0.05 10.2)
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 #23504E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.013
- Dark Blue Green #005249 ΔE 0.023
- Dark Teal #014D4E ΔE 0.024
- Deep Teal #00555A ΔE 0.025
- Charcoal #264653 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.051
- Petrol #005F6A ΔE 0.056
Use #23504E 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.