#181E27
Closest named color: Rich Black (#0D1B2A). oklch(23.3% 0.02 258.4), rgb(24, 30, 39).
Aa
White text reads best on this color (16.74:1).
About this color
#181E27 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 16.74:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.25:1 |
| White text | 16.74:1 |
Values
| HEX | #181E27 |
| RGB | rgb(24, 30, 39) |
| HSL | hsl(216, 24%, 12%) |
| OKLCH | oklch(23.3% 0.02 258.4) |
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 #181E27 | 16.74:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #181E27 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #181E27 text on white | 16.74:1 | AAA | Lc 103.7 | Preferred for body text |
| #181E27 text on black | 1.25:1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4D9E2
oklch(88.4% 0.013 262.4)
-
Step 300
300
#B8C1D0
oklch(80.9% 0.023 260.7)
-
Step 400
400
#93A2B8
oklch(70.8% 0.036 257.9)
-
Step 500
500
#788BA7
oklch(63.2% 0.048 258)
-
Step 600
600
#617492
oklch(55.5% 0.052 259.4)
-
Step 700
700
#50627C
oklch(49.2% 0.047 257.5)
-
Step 800
800
#425065
oklch(42.8% 0.039 258.3)
-
Step 900
900
#384252
oklch(37.7% 0.031 259.7)
-
Step 950
950 (this color)
#181E27
oklch(23.3% 0.02 258.4)
#181E27 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) | #1B1E27 | 0.005 |
| Deuteranopia (no green cones) | #191D27 | 0.004 |
| Tritanopia (no blue cones) | #142021 | 0.017 |
| Achromatopsia (no color) | #1E1E1E | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181E27
#181E27
oklch(23.3% 0.02 258.4)
- #231D13
#231D13
oklch(23.4% 0.02 80.2)
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 #181E27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Dark #1B2431 ΔE 0.026
- Jet #212529 ΔE 0.031
- Oxford Blue #1B263B ΔE 0.043
- Rich Navy #001219 ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.075
- Dark Brown #341C02 ΔE 0.076
- Almost Black #070D0D ΔE 0.083
Use #181E27 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.