#183135
Closest named color: Gunmetal (#293241). oklch(29.5% 0.032 208.8), rgb(24, 49, 53).
Aa
White text reads best on this color (13.72:1).
About this color
#183135 is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.032 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.034 away. White text reads best on it, at 13.72:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.52:1 |
| White text | 13.72:1 |
Values
| HEX | #183135 |
| RGB | rgb(24, 49, 53) |
| HSL | hsl(188, 38%, 15%) |
| OKLCH | oklch(29.5% 0.032 208.8) |
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 #183135 | 13.72:1 | AAA | Lc -103.3 | Preferred for body text |
| Black text on #183135 | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #183135 text on white | 13.72:1 | AAA | Lc 100.2 | Preferred for body text |
| #183135 text on black | 1.52:1 | 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 950.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE0
oklch(88.4% 0.021 208.1)
-
Step 300
300
#A5C8CE
oklch(80.9% 0.038 209.1)
-
Step 400
400
#73ABB5
oklch(70.6% 0.06 209.9)
-
Step 500
500
#4B96A2
oklch(63% 0.076 209.1)
-
Step 600
600
#27818D
oklch(55.7% 0.084 207.9)
-
Step 700
700
#186D78
oklch(49.2% 0.078 208.1)
-
Step 800
800
#185962
oklch(42.8% 0.065 208.4)
-
Step 900
900
#1C4950
oklch(37.7% 0.05 209.1)
-
Step 950
950 (this color)
#183135
oklch(29.5% 0.032 208.8)
#183135 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) | #2D2F35 | 0.030 |
| Deuteranopia (no green cones) | #282C35 | 0.027 |
| Tritanopia (no blue cones) | #093332 | 0.017 |
| Achromatopsia (no color) | #2D2D2D | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #183135
#183135
oklch(29.5% 0.032 208.8)
- #3B2723
#3B2723
oklch(29.6% 0.031 31.6)
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 #183135, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.034
- Jet #212529 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.043
- Dark #1B2431 ΔE 0.045
- Midnight Green #073B4C ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.050
- Onyx #343A40 ΔE 0.055
Use #183135 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.