#182B33
Closest named color: Dark (#1B2431). oklch(27.6% 0.029 226.6), rgb(24, 43, 51).
Aa
White text reads best on this color (14.66:1).
About this color
#182B33 is a dark close to neutral grey. In OKLCH its lightness is 28%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.024 away. White text reads best on it, at 14.66:1.
| Hue family | Neutrals |
| Lightness | dark (28%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.43:1 |
| White text | 14.66:1 |
Values
| HEX | #182B33 |
| RGB | rgb(24, 43, 51) |
| HSL | hsl(198, 36%, 15%) |
| OKLCH | oklch(27.6% 0.029 226.6) |
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 #182B33 | 14.66:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #182B33 | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #182B33 text on white | 14.66:1 | AAA | Lc 101.4 | Preferred for body text |
| #182B33 text on black | 1.43:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CDDCE3
oklch(88.5% 0.019 227.3)
-
Step 300
300
#AAC6D2
oklch(81% 0.035 225.6)
-
Step 400
400
#7CA8BB
oklch(70.7% 0.055 226.4)
-
Step 500
500
#5992AA
oklch(63% 0.07 226.8)
-
Step 600
600
#3D7C96
oklch(55.5% 0.076 227.5)
-
Step 700
700
#2E6980
oklch(49.2% 0.071 226.6)
-
Step 800
800
#285568
oklch(42.6% 0.059 228.1)
-
Step 900
900
#254754
oklch(37.8% 0.045 224.9)
-
Step 950
950 (this color)
#182B33
oklch(27.6% 0.029 226.6)
#182B33 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) | #272A33 | 0.022 |
| Deuteranopia (no green cones) | #232733 | 0.020 |
| Tritanopia (no blue cones) | #0C2D2E | 0.019 |
| Achromatopsia (no color) | #282828 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182B33
#182B33
oklch(27.6% 0.029 226.6)
- #34241C
#34241C
oklch(27.7% 0.028 47.7)
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 #182B33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.024
- Jet #212529 ΔE 0.025
- Oxford Blue #1B263B ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.042
- Gunmetal #293241 ΔE 0.042
- Midnight Green #073B4C ΔE 0.061
- Rich Black #0D1B2A ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.065
Use #182B33 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.