#131D42
Closest named color: Oxford Blue (#1B263B). oklch(24.5% 0.071 269.2), rgb(19, 29, 66).
Aa
White text reads best on this color (16.37:1).
About this color
#131D42 is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.071 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.038 away. White text reads best on it, at 16.37:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.28:1 |
| White text | 16.37:1 |
Values
| HEX | #131D42 |
| RGB | rgb(19, 29, 66) |
| HSL | hsl(227, 55%, 17%) |
| OKLCH | oklch(24.5% 0.071 269.2) |
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 #131D42 | 16.37:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #131D42 | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #131D42 text on white | 16.37:1 | AAA | Lc 103.2 | Preferred for body text |
| #131D42 text on black | 1.28:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9F9
oklch(88.6% 0.046 267.9)
-
Step 300
300
#AABFF8
oklch(80.9% 0.084 268.8)
-
Step 400
400
#7F9BF5
oklch(70.7% 0.136 269.6)
-
Step 500
500
#6080F1
oklch(63.2% 0.173 269.1)
-
Step 600
600
#4966DF
oklch(55.6% 0.187 269.3)
-
Step 700
700
#3B54C2
oklch(49.2% 0.174 269.3)
-
Step 800
800
#30459D
oklch(42.7% 0.145 269.2)
-
Step 900
900
#2A3B7C
oklch(37.6% 0.112 269.4)
-
Step 950
950 (this color)
#131D42
oklch(24.5% 0.071 269.2)
#131D42 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) | #092243 | 0.018 |
| Deuteranopia (no green cones) | #021E41 | 0.019 |
| Tritanopia (no blue cones) | #00262C | 0.061 |
| Achromatopsia (no color) | #202020 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131D42
#131D42
oklch(24.5% 0.071 269.2)
- #2A1F00
#2A1F00
oklch(24.6% 0.05 89.5)
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 #131D42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.038
- Dark #1B2431 ΔE 0.046
- Navy Blue #001146 ΔE 0.048
- Rich Black #0D1B2A ΔE 0.048
- Dark Indigo #1F0954 ΔE 0.058
- Jet #212529 ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.069
- Marine #042E60 ΔE 0.070
Use #131D42 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.