#131A37
Closest named color: Rich Black (#0D1B2A). oklch(22.9% 0.057 271.1), rgb(19, 26, 55).
Aa
White text reads best on this color (17.06:1).
About this color
#131A37 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.057 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 17.06:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 17.06:1 |
Values
| HEX | #131A37 |
| RGB | rgb(19, 26, 55) |
| HSL | hsl(228, 49%, 15%) |
| OKLCH | oklch(22.9% 0.057 271.1) |
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 #131A37 | 17.06:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #131A37 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #131A37 text on white | 17.06:1 | AAA | Lc 103.9 | Preferred for body text |
| #131A37 text on black | 1.23:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B0BFED
oklch(80.9% 0.067 270.7)
-
Step 400
400
#889DE4
oklch(70.8% 0.107 270.9)
-
Step 500
500
#6B82DC
oklch(63% 0.138 271.2)
-
Step 600
600
#546ACA
oklch(55.6% 0.15 271.1)
-
Step 700
700
#4558AF
oklch(49.1% 0.14 271.2)
-
Step 800
800
#39488D
oklch(42.6% 0.115 271.5)
-
Step 900
900
#303D71
oklch(37.6% 0.09 271)
-
Step 950
950 (this color)
#131A37
oklch(22.9% 0.057 271.1)
#131A37 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) | #0D1E38 | 0.014 |
| Deuteranopia (no green cones) | #081A36 | 0.015 |
| Tritanopia (no blue cones) | #022025 | 0.051 |
| Achromatopsia (no color) | #1C1C1C | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131A37
#131A37
oklch(22.9% 0.057 271.1)
- #251B00
#251B00
oklch(22.8% 0.047 89.6)
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 #131A37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Dark #1B2431 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.044
- Navy Blue #001146 ΔE 0.050
- Jet #212529 ΔE 0.059
- Dark Indigo #1F0954 ΔE 0.069
- Midnight Purple #280137 ΔE 0.073
- Rich Navy #001219 ΔE 0.074
Use #131A37 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.