#131B2A
Closest named color: Rich Black (#0D1B2A). oklch(22.2% 0.032 262.5), rgb(19, 27, 42).
Aa
White text reads best on this color (17.24:1).
About this color
#131B2A is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.032 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.009 away. White text reads best on it, at 17.24:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.24:1 |
Values
| HEX | #131B2A |
| RGB | rgb(19, 27, 42) |
| HSL | hsl(219, 38%, 12%) |
| OKLCH | oklch(22.2% 0.032 262.5) |
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 #131B2A | 17.24:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #131B2A | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #131B2A text on white | 17.24:1 | AAA | Lc 104.1 | Preferred for body text |
| #131B2A text on black | 1.21:1 | 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
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2D9E7
oklch(88.4% 0.021 264.5)
-
Step 300
300
#B4C1DA
oklch(80.9% 0.038 263.6)
-
Step 400
400
#8DA1C7
oklch(70.7% 0.06 263.1)
-
Step 500
500
#708AB9
oklch(63.2% 0.077 262)
-
Step 600
600
#5973A5
oklch(55.6% 0.084 262.9)
-
Step 700
700
#49608D
oklch(49.1% 0.078 263.1)
-
Step 800
800
#3C4F73
oklch(42.8% 0.065 262.6)
-
Step 900
900
#33425D
oklch(37.8% 0.05 261.8)
-
Step 950
950 (this color)
#131B2A
oklch(22.2% 0.032 262.5)
#131B2A 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) | #161C2B | 0.007 |
| Deuteranopia (no green cones) | #131A2A | 0.004 |
| Tritanopia (no blue cones) | #0B1E20 | 0.028 |
| Achromatopsia (no color) | #1B1B1B | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131B2A
#131B2A
oklch(22.2% 0.032 262.5)
- #221A09
#221A09
oklch(22.3% 0.031 84.6)
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 #131B2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.009
- Dark #1B2431 ΔE 0.036
- Jet #212529 ΔE 0.046
- Oxford Blue #1B263B ΔE 0.048
- Rich Navy #001219 ΔE 0.057
- Navy Blue #001146 ΔE 0.071
- Almost Black #070D0D ΔE 0.076
- Space Cadet #2B2D42 ΔE 0.084
Use #131B2A 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.