#18524A
Closest named color: Dark Blue Green (#005249). oklch(39.9% 0.061 182.3), rgb(24, 82, 74).
Aa
White text reads best on this color (8.95:1).
About this color
#18524A is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.061 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.011 away. White text reads best on it, at 8.95:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #18524A |
| RGB | rgb(24, 82, 74) |
| HSL | hsl(172, 55%, 21%) |
| OKLCH | oklch(39.9% 0.061 182.3) |
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 #18524A | 8.95:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #18524A | 2.34:1 | Fails | Lc 13.7 | Not readable |
| #18524A text on white | 8.95:1 | AAA | Lc 90.3 | Preferred for body text |
| #18524A text on black | 2.34:1 | 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
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C8DFDA
oklch(88.5% 0.025 181.2)
-
Step 300
300
#A1CBC3
oklch(81% 0.046 182.2)
-
Step 400
400
#6AB0A4
oklch(70.7% 0.073 182)
-
Step 500
500
#3A9C8E
oklch(63.2% 0.093 182.2)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900 (this color)
#18524A
oklch(39.9% 0.061 182.3)
-
Step 950
950
#0D2D28
oklch(27.2% 0.039 181.4)
#18524A 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) | #4E4D4A | 0.064 |
| Deuteranopia (no green cones) | #45474B | 0.060 |
| Tritanopia (no blue cones) | #00544F | 0.012 |
| Achromatopsia (no color) | #494949 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18524A
#18524A
oklch(39.9% 0.061 182.3)
- #633945
#633945
oklch(40% 0.062 1.8)
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 #18524A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.011
- Dark Teal #014D4E ΔE 0.024
- Deep Teal #00555A ΔE 0.026
- Dark Slate Gray #2F4F4F ΔE 0.026
- Charcoal #264653 ΔE 0.048
- Dark Green Blue #1F6357 ΔE 0.056
- Petrol #005F6A ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.058
Use #18524A 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.