#18524D
Closest named color: Dark Blue Green (#005249). oklch(40% 0.059 187), rgb(24, 82, 77).
Aa
White text reads best on this color (8.92:1).
About this color
#18524D is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.059 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.014 away. White text reads best on it, at 8.92:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.35:1 |
| White text | 8.92:1 |
Values
| HEX | #18524D |
| RGB | rgb(24, 82, 77) |
| HSL | hsl(175, 55%, 21%) |
| OKLCH | oklch(40% 0.059 187) |
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 #18524D | 8.92:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #18524D | 2.35:1 | Fails | Lc 13.8 | Not readable |
| #18524D text on white | 8.92:1 | AAA | Lc 90.2 | Preferred for body text |
| #18524D text on black | 2.35:1 | Fails | Lc -12.1 | 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
#C8DFDC
oklch(88.6% 0.025 187.3)
-
Step 300
300
#A1CAC5
oklch(80.8% 0.044 187.2)
-
Step 400
400
#6AAFA8
oklch(70.6% 0.071 187.5)
-
Step 500
500
#399B93
oklch(63.1% 0.091 187.6)
-
Step 600
600
#00857D
oklch(55.5% 0.097 187.4)
-
Step 700
700
#007069
oklch(49.1% 0.086 187.3)
-
Step 800
800
#005C56
oklch(42.8% 0.075 187.1)
-
Step 900
900 (this color)
#18524D
oklch(40% 0.059 187)
-
Step 950
950
#0C2C29
oklch(26.9% 0.038 186.7)
#18524D 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) | #4D4D4D | 0.063 |
| Deuteranopia (no green cones) | #45474E | 0.060 |
| Tritanopia (no blue cones) | #005450 | 0.011 |
| Achromatopsia (no color) | #4A4A4A | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18524D
#18524D
oklch(40% 0.059 187)
- #633A42
#633A42
oklch(40.1% 0.059 7.4)
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 #18524D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.014
- Deep Teal #00555A ΔE 0.021
- Dark Teal #014D4E ΔE 0.022
- Dark Slate Gray #2F4F4F ΔE 0.023
- Charcoal #264653 ΔE 0.045
- Petrol #005F6A ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.054
- Dark Green Blue #1F6357 ΔE 0.055
Use #18524D 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.