#031C43
Closest named color: Navy Blue (#001146). oklch(23.5% 0.08 258.6), rgb(3, 28, 67).
Aa
White text reads best on this color (16.78:1).
About this color
#031C43 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.080 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.033 away. White text reads best on it, at 16.78:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.25:1 |
| White text | 16.78:1 |
Values
| HEX | #031C43 |
| RGB | rgb(3, 28, 67) |
| HSL | hsl(217, 91%, 14%) |
| OKLCH | oklch(23.5% 0.08 258.6) |
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 #031C43 | 16.78:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #031C43 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #031C43 text on white | 16.78:1 | AAA | Lc 103.4 | Preferred for body text |
| #031C43 text on black | 1.25:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C4DBFD
oklch(88.5% 0.053 258)
-
Step 300
300
#9BC2FE
oklch(80.8% 0.095 258.8)
-
Step 400
400
#63A0FE
oklch(70.7% 0.152 258.8)
-
Step 500
500
#3485FC
oklch(63.1% 0.194 258.5)
-
Step 600
600
#006AEC
oklch(55.5% 0.213 258.8)
-
Step 700
700
#0059C8
oklch(49.1% 0.188 258.7)
-
Step 800
800
#0049A5
oklch(42.7% 0.162 258.5)
-
Step 900
900
#0E3E83
oklch(37.7% 0.127 258.7)
-
Step 950
950 (this color)
#031C43
oklch(23.5% 0.08 258.6)
#031C43 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) | #032044 | 0.013 |
| Deuteranopia (no green cones) | #001B42 | 0.006 |
| Tritanopia (no blue cones) | #00262C | 0.062 |
| Achromatopsia (no color) | #1D1D1D | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031C43
#031C43
oklch(23.5% 0.08 258.6)
- #2A1B00
#2A1B00
oklch(23.5% 0.049 80)
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 #031C43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.033
- Rich Black #0D1B2A ΔE 0.049
- Oxford Blue #1B263B ΔE 0.051
- Dark #1B2431 ΔE 0.057
- Night Blue #040348 ΔE 0.061
- Dark Indigo #1F0954 ΔE 0.063
- Darkblue #030764 ΔE 0.072
- Marine #042E60 ΔE 0.074
Use #031C43 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.