#031835
Closest named color: Rich Black (#0D1B2A). oklch(21.2% 0.064 256.3), rgb(3, 24, 53).
Aa
White text reads best on this color (17.70:1).
About this color
#031835 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.064 and its hue 256°. 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 17.70:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.70:1 |
Values
| HEX | #031835 |
| RGB | rgb(3, 24, 53) |
| HSL | hsl(215, 89%, 11%) |
| OKLCH | oklch(21.2% 0.064 256.3) |
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 #031835 | 17.70:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #031835 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #031835 text on white | 17.70:1 | AAA | Lc 104.3 | Preferred for body text |
| #031835 text on black | 1.18:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A1C3F1
oklch(80.8% 0.075 256.1)
-
Step 400
400
#6DA3EB
oklch(70.8% 0.121 256)
-
Step 500
500
#4489E4
oklch(63% 0.154 256.3)
-
Step 600
600
#2271D2
oklch(55.5% 0.167 256.2)
-
Step 700
700
#145EB6
oklch(49% 0.156 256.3)
-
Step 800
800
#154D93
oklch(42.6% 0.129 256.4)
-
Step 900
900
#194176
oklch(37.7% 0.101 256.6)
-
Step 950
950 (this color)
#031835
oklch(21.2% 0.064 256.3)
#031835 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) | #081B36 | 0.013 |
| Deuteranopia (no green cones) | #001634 | 0.009 |
| Tritanopia (no blue cones) | #001F23 | 0.049 |
| Achromatopsia (no color) | #181818 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #031835
#031835
oklch(21.2% 0.064 256.3)
- #241500
#241500
oklch(21.1% 0.044 75.5)
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 #031835, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Navy Blue #001146 ΔE 0.040
- Dark #1B2431 ΔE 0.059
- Rich Navy #001219 ΔE 0.059
- Oxford Blue #1B263B ΔE 0.062
- Dark Navy #000435 ΔE 0.062
- Night Blue #040348 ΔE 0.062
- Very Dark Blue #000133 ΔE 0.073
Use #031835 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.