#18252B
Closest named color: Dark (#1B2431). oklch(25.5% 0.021 228.2), rgb(24, 37, 43).
Aa
White text reads best on this color (15.69:1).
About this color
#18252B is a dark close to neutral grey. In OKLCH its lightness is 26%, its chroma 0.021. 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 15.69:1.
| Hue family | Neutrals |
| Lightness | dark (26%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.33:1 |
| White text | 15.69:1 |
Values
| HEX | #18252B |
| RGB | rgb(24, 37, 43) |
| HSL | hsl(199, 28%, 13%) |
| OKLCH | oklch(25.5% 0.021 228.2) |
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 #18252B | 15.69:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #18252B | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #18252B text on white | 15.69:1 | AAA | Lc 102.6 | Preferred for body text |
| #18252B text on black | 1.33:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D0DBE0
oklch(88.5% 0.014 226.6)
-
Step 300
300
#B1C4CE
oklch(80.9% 0.025 230.5)
-
Step 400
400
#87A6B5
oklch(70.7% 0.041 228.8)
-
Step 500
500
#6990A2
oklch(63.1% 0.051 228.2)
-
Step 600
600
#4F7A8D
oklch(55.6% 0.056 227.7)
-
Step 700
700
#406778
oklch(49.2% 0.052 227.5)
-
Step 800
800
#355462
oklch(42.8% 0.043 228.2)
-
Step 900
900
#2E4550
oklch(37.6% 0.034 229.3)
-
Step 950
950 (this color)
#18252B
oklch(25.5% 0.021 228.2)
#18252B 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) | #22242B | 0.016 |
| Deuteranopia (no green cones) | #1F222B | 0.015 |
| Tritanopia (no blue cones) | #112727 | 0.015 |
| Achromatopsia (no color) | #232323 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18252B
#18252B
oklch(25.5% 0.021 228.2)
- #2C201A
#2C201A
oklch(25.6% 0.022 47.9)
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 #18252B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.014
- Jet #212529 ΔE 0.014
- Oxford Blue #1B263B ΔE 0.031
- Rich Black #0D1B2A ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.058
- Gunmetal #293241 ΔE 0.062
- Dark Brown #341C02 ΔE 0.075
- Pakistan Green #283618 ΔE 0.082
Use #18252B 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.