#18242D
Closest named color: Dark (#1B2431). oklch(25.3% 0.024 241.3), rgb(24, 36, 45).
Aa
White text reads best on this color (15.80:1).
About this color
#18242D is a dark close to neutral grey. In OKLCH its lightness is 25%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.009 away. White text reads best on it, at 15.80:1.
| Hue family | Neutrals |
| Lightness | dark (25%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.32:1 |
| White text | 15.80:1 |
Values
| HEX | #18242D |
| RGB | rgb(24, 36, 45) |
| HSL | hsl(206, 30%, 14%) |
| OKLCH | oklch(25.3% 0.024 241.3) |
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 #18242D | 15.80:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #18242D | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #18242D text on white | 15.80:1 | AAA | Lc 102.7 | Preferred for body text |
| #18242D text on black | 1.32:1 | 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
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B1C3D2
oklch(80.8% 0.029 243.2)
-
Step 400
400
#88A5BB
oklch(70.8% 0.046 241)
-
Step 500
500
#6A8EAA
oklch(63% 0.058 242.2)
-
Step 600
600
#517895
oklch(55.5% 0.063 241.5)
-
Step 700
700
#42657F
oklch(49.1% 0.058 241.6)
-
Step 800
800
#365367
oklch(42.8% 0.048 239.5)
-
Step 900
900
#2F4454
oklch(37.6% 0.038 241.8)
-
Step 950
950 (this color)
#18242D
oklch(25.3% 0.024 241.3)
#18242D 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) | #20242D | 0.013 |
| Deuteranopia (no green cones) | #1D222D | 0.010 |
| Tritanopia (no blue cones) | #112627 | 0.018 |
| Achromatopsia (no color) | #232323 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18242D
#18242D
oklch(25.3% 0.024 241.3)
- #2B2017
#2B2017
oklch(25.4% 0.023 60.8)
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 #18242D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.009
- Jet #212529 ΔE 0.017
- Oxford Blue #1B263B ΔE 0.027
- Rich Black #0D1B2A ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.057
- Gunmetal #293241 ΔE 0.063
- Dark Brown #341C02 ΔE 0.078
- Midnight Green #073B4C ΔE 0.084
Use #18242D 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.