#18524C
Closest named color: Dark Blue Green (#005249). oklch(40% 0.06 185.4), rgb(24, 82, 76).
Aa
White text reads best on this color (8.93:1).
About this color
#18524C is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.060 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.013 away. White text reads best on it, at 8.93:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.35:1 |
| White text | 8.93:1 |
Values
| HEX | #18524C |
| RGB | rgb(24, 82, 76) |
| HSL | hsl(174, 55%, 21%) |
| OKLCH | oklch(40% 0.06 185.4) |
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 #18524C | 8.93:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #18524C | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #18524C text on white | 8.93:1 | AAA | Lc 90.2 | Preferred for body text |
| #18524C text on black | 2.35:1 | Fails | Lc -12.0 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C8DFDB
oklch(88.5% 0.025 184.2)
-
Step 300
300
#A1CBC4
oklch(81% 0.045 183.9)
-
Step 400
400
#6AAFA7
oklch(70.6% 0.071 186.3)
-
Step 500
500
#3A9B91
oklch(63% 0.091 185.7)
-
Step 600
600
#00857B
oklch(55.5% 0.097 185.6)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900 (this color)
#18524C
oklch(40% 0.06 185.4)
-
Step 950
950
#0C2C29
oklch(26.9% 0.038 186.7)
#18524C 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) | #4E4D4C | 0.064 |
| Deuteranopia (no green cones) | #45474D | 0.060 |
| Tritanopia (no blue cones) | #005450 | 0.011 |
| Achromatopsia (no color) | #494949 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18524C
#18524C
oklch(40% 0.06 185.4)
- #633A43
#633A43
oklch(40.1% 0.059 5.9)
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 #18524C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.013
- Dark Teal #014D4E ΔE 0.023
- Deep Teal #00555A ΔE 0.023
- Dark Slate Gray #2F4F4F ΔE 0.024
- Charcoal #264653 ΔE 0.046
- Petrol #005F6A ΔE 0.055
- Dark Green Blue #1F6357 ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.056
Use #18524C 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.