#131E5D
Closest named color: Midnight Blue (#191970). oklch(27.3% 0.113 269.5), rgb(19, 30, 93).
Aa
White text reads best on this color (15.31:1).
About this color
#131E5D is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.113 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.035 away. White text reads best on it, at 15.31:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.37:1 |
| White text | 15.31:1 |
Values
| HEX | #131E5D |
| RGB | rgb(19, 30, 93) |
| HSL | hsl(231, 66%, 22%) |
| OKLCH | oklch(27.3% 0.113 269.5) |
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 #131E5D | 15.31:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #131E5D | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #131E5D text on white | 15.31:1 | AAA | Lc 101.8 | Preferred for body text |
| #131E5D text on black | 1.37:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2EAFF
oklch(93.7% 0.03 269.1)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A8BEFF
oklch(80.9% 0.096 269.8)
-
Step 400
400
#7B9AFF
oklch(70.8% 0.152 269.4)
-
Step 500
500
#5C7CFF
oklch(63.1% 0.197 269.6)
-
Step 600
600
#4059FF
oklch(55.5% 0.245 269.5)
-
Step 700
700
#3135F9
oklch(49.2% 0.275 269.6)
-
Step 800
800
#272FC9
oklch(42.7% 0.229 269.6)
-
Step 900
900
#212E9E
oklch(37.7% 0.179 269.6)
-
Step 950
950 (this color)
#131E5D
oklch(27.3% 0.113 269.5)
#131E5D 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) | #00295F | 0.031 |
| Deuteranopia (no green cones) | #00225C | 0.019 |
| Tritanopia (no blue cones) | #002E3A | 0.088 |
| Achromatopsia (no color) | #252525 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131E5D
#131E5D
oklch(27.3% 0.113 269.5)
- #322500
#322500
oklch(27.2% 0.056 88.7)
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 #131E5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.035
- Marine #042E60 ΔE 0.044
- Dark Indigo #1F0954 ΔE 0.049
- Darkblue #030764 ΔE 0.053
- Dark Royal Blue #02066F ΔE 0.057
- Deep Blue #040273 ΔE 0.062
- Navy Blue #001146 ΔE 0.065
- Oxford Blue #1B263B ΔE 0.071
Use #131E5D 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.