#183033
Closest named color: Gunmetal (#293241). oklch(29.1% 0.03 206), rgb(24, 48, 51).
Aa
White text reads best on this color (13.91:1).
About this color
#183033 is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.030 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.037 away. White text reads best on it, at 13.91:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.50:1 |
| White text | 13.91:1 |
Values
| HEX | #183033 |
| RGB | rgb(24, 48, 51) |
| HSL | hsl(187, 36%, 15%) |
| OKLCH | oklch(29.1% 0.03 206) |
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 #183033 | 13.91:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #183033 | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #183033 text on white | 13.91:1 | AAA | Lc 100.5 | Preferred for body text |
| #183033 text on black | 1.50:1 | 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
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A6C8CC
oklch(80.9% 0.037 205.2)
-
Step 400
400
#75ABB2
oklch(70.6% 0.058 206.1)
-
Step 500
500
#4E969F
oklch(63% 0.073 206.1)
-
Step 600
600
#2C818A
oklch(55.7% 0.08 205.1)
-
Step 700
700
#1D6D75
oklch(49.2% 0.075 204.9)
-
Step 800
800
#1C5960
oklch(42.9% 0.062 205.9)
-
Step 900
900
#1E494E
oklch(37.7% 0.048 205.6)
-
Step 950
950 (this color)
#183033
oklch(29.1% 0.03 206)
#183033 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) | #2D2E33 | 0.031 |
| Deuteranopia (no green cones) | #282B33 | 0.027 |
| Tritanopia (no blue cones) | #0B3231 | 0.015 |
| Achromatopsia (no color) | #2C2C2C | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #183033
#183033
oklch(29.1% 0.03 206)
- #392624
#392624
oklch(29.1% 0.029 25.8)
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 #183033, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.037
- Jet #212529 ΔE 0.038
- Dark #1B2431 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.044
- Midnight Green #073B4C ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.055
- Pakistan Green #283618 ΔE 0.058
Use #183033 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.