#1B202F
Closest named color: Dark (#1B2431). oklch(24.6% 0.03 269.9), rgb(27, 32, 47).
Aa
White text reads best on this color (16.22:1).
About this color
#1B202F is a very dark close to neutral grey. In OKLCH its lightness is 25%, 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 16.22:1.
| Hue family | Neutrals |
| Lightness | very dark (25%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.29:1 |
| White text | 16.22:1 |
Values
| HEX | #1B202F |
| RGB | rgb(27, 32, 47) |
| HSL | hsl(225, 27%, 15%) |
| OKLCH | oklch(24.6% 0.03 269.9) |
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 #1B202F | 16.22:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #1B202F | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #1B202F text on white | 16.22:1 | AAA | Lc 103.2 | Preferred for body text |
| #1B202F text on black | 1.29:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B7C0D8
oklch(80.8% 0.035 269.2)
-
Step 400
400
#93A0C5
oklch(70.8% 0.056 269.8)
-
Step 500
500
#7888B6
oklch(63.2% 0.072 269.5)
-
Step 600
600
#6171A2
oklch(55.6% 0.079 269.9)
-
Step 700
700
#505F8A
oklch(49.2% 0.072 269)
-
Step 800
800
#424D70
oklch(42.6% 0.06 270.3)
-
Step 900
900
#38405B
oklch(37.6% 0.048 271.3)
-
Step 950
950 (this color)
#1B202F
oklch(24.6% 0.03 269.9)
#1B202F 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) | #1B2130 | 0.004 |
| Deuteranopia (no green cones) | #19202F | 0.003 |
| Tritanopia (no blue cones) | #152325 | 0.027 |
| Achromatopsia (no color) | #202020 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B202F
#1B202F
oklch(24.6% 0.03 269.9)
- #262010
#262010
oklch(24.6% 0.029 89.6)
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 #1B202F, 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 0.027
- Oxford Blue #1B263B ΔE 0.027
- Rich Black #0D1B2A ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.060
- Gunmetal #293241 ΔE 0.070
- Rich Navy #001219 ΔE 0.081
- Navy Blue #001146 ΔE 0.081
Use #1B202F 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.