#183E35
Closest named color: Evergreen (#05472A). oklch(33.3% 0.046 175.5), rgb(24, 62, 53).
Aa
White text reads best on this color (11.80:1).
About this color
#183E35 is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.046 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Evergreen (#05472A), ΔE 0.043 away. White text reads best on it, at 11.80:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Evergreen (#05472A) |
| Black text | 1.77:1 |
| White text | 11.80:1 |
Values
| HEX | #183E35 |
| RGB | rgb(24, 62, 53) |
| HSL | hsl(166, 44%, 17%) |
| OKLCH | oklch(33.3% 0.046 175.5) |
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 #183E35 | 11.80:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #183E35 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #183E35 text on white | 11.80:1 | AAA | Lc 96.9 | Preferred for body text |
| #183E35 text on black | 1.77:1 | Fails | Lc 0.0 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CDDED8
oklch(88.6% 0.02 172.7)
-
Step 300
300
#AAC8BF
oklch(80.8% 0.035 175.4)
-
Step 400
400
#7CAC9F
oklch(70.6% 0.055 176)
-
Step 500
500
#589887
oklch(63.2% 0.071 174.9)
-
Step 600
600
#3A8271
oklch(55.5% 0.077 175.6)
-
Step 700
700
#2C6E5F
oklch(49.1% 0.072 175.8)
-
Step 800
800
#265A4D
oklch(42.8% 0.06 174.6)
-
Step 900
900 (this color)
#183E35
oklch(33.3% 0.046 175.5)
-
Step 950
950
#162B26
oklch(27% 0.029 177.1)
#183E35 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) | #3C3A35 | 0.049 |
| Deuteranopia (no green cones) | #363636 | 0.046 |
| Tritanopia (no blue cones) | #053F3B | 0.014 |
| Achromatopsia (no color) | #383838 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #183E35
#183E35
oklch(33.3% 0.046 175.5)
- #492C37
#492C37
oklch(33.3% 0.046 355.5)
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 #183E35, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Evergreen #05472A ΔE 0.043
- Pakistan Green #283618 ΔE 0.045
- Onyx #343A40 ΔE 0.046
- Midnight Green #073B4C ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.049
- Dark Teal #014D4E ΔE 0.055
- Charcoal Grey #3C4142 ΔE 0.056
- Gunmetal #293241 ΔE 0.056
Use #183E35 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.