#131C44
Closest named color: Oxford Blue (#1B263B). oklch(24.4% 0.076 270.3), rgb(19, 28, 68).
Aa
White text reads best on this color (16.44:1).
About this color
#131C44 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.076 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.042 away. White text reads best on it, at 16.44:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.27:1 |
| White text | 16.44:1 |
Values
| HEX | #131C44 |
| RGB | rgb(19, 28, 68) |
| HSL | hsl(229, 56%, 17%) |
| OKLCH | oklch(24.4% 0.076 270.3) |
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 #131C44 | 16.44:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #131C44 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #131C44 text on white | 16.44:1 | AAA | Lc 103.2 | Preferred for body text |
| #131C44 text on black | 1.27:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CCD8FB
oklch(88.4% 0.05 270.4)
-
Step 300
300
#AABEFC
oklch(80.9% 0.091 270.5)
-
Step 400
400
#7E9AFA
oklch(70.7% 0.144 270.1)
-
Step 500
500
#607DF7
oklch(63% 0.184 270.3)
-
Step 600
600
#4A63E6
oklch(55.7% 0.2 270.4)
-
Step 700
700
#3C51C8
oklch(49.2% 0.186 270.4)
-
Step 800
800
#3143A2
oklch(42.7% 0.154 270.4)
-
Step 900
900
#2A3A80
oklch(37.7% 0.119 270.1)
-
Step 950
950 (this color)
#131C44
oklch(24.4% 0.076 270.3)
#131C44 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) | #052245 | 0.022 |
| Deuteranopia (no green cones) | #001D43 | 0.022 |
| Tritanopia (no blue cones) | #00252C | 0.064 |
| Achromatopsia (no color) | #1F1F1F | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131C44
#131C44
oklch(24.4% 0.076 270.3)
- #291F00
#291F00
oklch(24.4% 0.05 91.4)
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 #131C44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.042
- Navy Blue #001146 ΔE 0.045
- Dark #1B2431 ΔE 0.051
- Rich Black #0D1B2A ΔE 0.052
- Dark Indigo #1F0954 ΔE 0.053
- Night Blue #040348 ΔE 0.069
- Jet #212529 ΔE 0.070
- Marine #042E60 ΔE 0.070
Use #131C44 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.