#131C4A
Closest named color: Navy Blue (#001146). oklch(25% 0.086 270.6), rgb(19, 28, 74).
Aa
White text reads best on this color (16.24:1).
About this color
#131C4A is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.086 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.045 away. White text reads best on it, at 16.24:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.29:1 |
| White text | 16.24:1 |
Values
| HEX | #131C4A |
| RGB | rgb(19, 28, 74) |
| HSL | hsl(230, 59%, 18%) |
| OKLCH | oklch(25% 0.086 270.6) |
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 #131C4A | 16.24:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #131C4A | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #131C4A text on white | 16.24:1 | AAA | Lc 103.0 | Preferred for body text |
| #131C4A 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FE
oklch(93.5% 0.029 271.1)
-
Step 200
200
#CBD8FF
oklch(88.5% 0.056 270.7)
-
Step 300
300
#A9BEFF
oklch(80.9% 0.095 270.4)
-
Step 400
400
#7D99FF
oklch(70.7% 0.152 270.5)
-
Step 500
500
#5E7BFF
oklch(63.1% 0.198 270.4)
-
Step 600
600
#475DF5
oklch(55.7% 0.227 270.7)
-
Step 700
700
#394BD5
oklch(49.1% 0.21 270.5)
-
Step 800
800
#2F3FAC
oklch(42.7% 0.174 270.6)
-
Step 900
900
#283788
oklch(37.6% 0.136 270.5)
-
Step 950
950 (this color)
#131C4A
oklch(25% 0.086 270.6)
#131C4A 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) | #00234C | 0.025 |
| Deuteranopia (no green cones) | #001E49 | 0.021 |
| Tritanopia (no blue cones) | #00272F | 0.071 |
| Achromatopsia (no color) | #202020 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131C4A
#131C4A
oklch(25% 0.086 270.6)
- #2B2000
#2B2000
oklch(25% 0.051 90)
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 #131C4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.045
- Dark Indigo #1F0954 ΔE 0.046
- Oxford Blue #1B263B ΔE 0.048
- Dark #1B2431 ΔE 0.060
- Rich Black #0D1B2A ΔE 0.063
- Marine #042E60 ΔE 0.063
- Darkblue #030764 ΔE 0.067
- Night Blue #040348 ΔE 0.068
Use #131C4A 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.