#131D30
Closest named color: Rich Black (#0D1B2A). oklch(23.2% 0.04 262.5), rgb(19, 29, 48).
Aa
White text reads best on this color (16.85:1).
About this color
#131D30 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.040 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.016 away. White text reads best on it, at 16.85:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.85:1 |
Values
| HEX | #131D30 |
| RGB | rgb(19, 29, 48) |
| HSL | hsl(219, 43%, 13%) |
| OKLCH | oklch(23.2% 0.04 262.5) |
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 #131D30 | 16.85:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #131D30 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #131D30 text on white | 16.85:1 | AAA | Lc 103.7 | Preferred for body text |
| #131D30 text on black | 1.24:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0DAEB
oklch(88.6% 0.026 261.1)
-
Step 300
300
#B1C1E0
oklch(80.9% 0.047 263.7)
-
Step 400
400
#87A1D0
oklch(70.7% 0.075 262.1)
-
Step 500
500
#6A89C4
oklch(63.1% 0.096 262.7)
-
Step 600
600
#5272B1
oklch(55.6% 0.105 263)
-
Step 700
700
#425F98
oklch(49% 0.098 262.8)
-
Step 800
800
#374E7B
oklch(42.7% 0.08 262.9)
-
Step 900
900
#2F4163
oklch(37.6% 0.063 262.4)
-
Step 950
950 (this color)
#131D30
oklch(23.2% 0.04 262.5)
#131D30 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) | #161E31 | 0.006 |
| Deuteranopia (no green cones) | #121C30 | 0.004 |
| Tritanopia (no blue cones) | #062124 | 0.035 |
| Achromatopsia (no color) | #1D1D1D | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131D30
#131D30
oklch(23.2% 0.04 262.5)
- #261B05
#261B05
oklch(23% 0.039 82.7)
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 #131D30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.016
- Dark #1B2431 ΔE 0.029
- Oxford Blue #1B263B ΔE 0.038
- Jet #212529 ΔE 0.043
- Navy Blue #001146 ΔE 0.066
- Rich Navy #001219 ΔE 0.068
- Space Cadet #2B2D42 ΔE 0.074
- Gunmetal #293241 ΔE 0.084
Use #131D30 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.