#131E43
Closest named color: Oxford Blue (#1B263B). oklch(24.8% 0.071 268.4), rgb(19, 30, 67).
Aa
White text reads best on this color (16.22:1).
About this color
#131E43 is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.071 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 16.22:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.22:1 |
Values
| HEX | #131E43 |
| RGB | rgb(19, 30, 67) |
| HSL | hsl(226, 56%, 17%) |
| OKLCH | oklch(24.8% 0.071 268.4) |
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 #131E43 | 16.22:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #131E43 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #131E43 text on white | 16.22:1 | AAA | Lc 103.0 | Preferred for body text |
| #131E43 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
#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
#A9BFF8
oklch(80.8% 0.085 268.1)
-
Step 400
400
#7D9CF5
oklch(70.7% 0.135 268.3)
-
Step 500
500
#5E80F1
oklch(63.1% 0.173 268.5)
-
Step 600
600
#4666DF
oklch(55.5% 0.188 268.4)
-
Step 700
700
#3854C2
oklch(49.1% 0.175 268.4)
-
Step 800
800
#2E469D
oklch(42.8% 0.144 268.1)
-
Step 900
900
#293C7D
oklch(37.8% 0.113 268.3)
-
Step 950
950 (this color)
#131E43
oklch(24.8% 0.071 268.4)
#131E43 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) | #0A2344 | 0.017 |
| Deuteranopia (no green cones) | #031E42 | 0.018 |
| Tritanopia (no blue cones) | #00272D | 0.061 |
| Achromatopsia (no color) | #202020 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131E43
#131E43
oklch(24.8% 0.071 268.4)
- #2B1F00
#2B1F00
oklch(24.7% 0.05 87.7)
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 #131E43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Dark #1B2431 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.050
- Navy Blue #001146 ΔE 0.050
- Dark Indigo #1F0954 ΔE 0.059
- Jet #212529 ΔE 0.064
- Space Cadet #2B2D42 ΔE 0.066
- Marine #042E60 ΔE 0.067
Use #131E43 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.