#182833
Closest named color: Dark (#1B2431). oklch(26.8% 0.03 239.4), rgb(24, 40, 51).
Aa
White text reads best on this color (15.10:1).
About this color
#182833 is a dark close to neutral grey. In OKLCH its lightness is 27%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.014 away. White text reads best on it, at 15.10:1.
| Hue family | Neutrals |
| Lightness | dark (27%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.39:1 |
| White text | 15.10:1 |
Values
| HEX | #182833 |
| RGB | rgb(24, 40, 51) |
| HSL | hsl(204, 36%, 15%) |
| OKLCH | oklch(26.8% 0.03 239.4) |
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 #182833 | 15.10:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #182833 | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #182833 text on white | 15.10:1 | AAA | Lc 102.0 | Preferred for body text |
| #182833 text on black | 1.39:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE5
oklch(88.5% 0.02 240.8)
-
Step 300
300
#ADC4D5
oklch(80.8% 0.035 240)
-
Step 400
400
#81A6C0
oklch(70.7% 0.056 239.2)
-
Step 500
500
#6090B1
oklch(63.2% 0.072 239.4)
-
Step 600
600
#457A9C
oklch(55.7% 0.078 238.4)
-
Step 700
700
#366686
oklch(49.1% 0.073 239.8)
-
Step 800
800
#2E536D
oklch(42.6% 0.061 240.8)
-
Step 900
900
#294558
oklch(37.7% 0.047 239.4)
-
Step 950
950 (this color)
#182833
oklch(26.8% 0.03 239.4)
#182833 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) | #232834 | 0.017 |
| Deuteranopia (no green cones) | #202533 | 0.015 |
| Tritanopia (no blue cones) | #0D2B2C | 0.023 |
| Achromatopsia (no color) | #262626 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #182833
#182833
oklch(26.8% 0.03 239.4)
- #312217
#312217
oklch(26.7% 0.03 57.3)
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 #182833, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.014
- Oxford Blue #1B263B ΔE 0.019
- Jet #212529 ΔE 0.021
- Space Cadet #2B2D42 ΔE 0.044
- Gunmetal #293241 ΔE 0.049
- Rich Black #0D1B2A ΔE 0.051
- Midnight Green #073B4C ΔE 0.068
- Prussian Blue #1D3557 ΔE 0.072
Use #182833 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.