#0A1C35
Closest named color: Rich Black (#0D1B2A). oklch(22.7% 0.054 257.1), rgb(10, 28, 53).
Aa
White text reads best on this color (17.06:1).
About this color
#0A1C35 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.054 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.021 away. White text reads best on it, at 17.06:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 17.06:1 |
Values
| HEX | #0A1C35 |
| RGB | rgb(10, 28, 53) |
| HSL | hsl(215, 68%, 12%) |
| OKLCH | oklch(22.7% 0.054 257.1) |
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 #0A1C35 | 17.06:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #0A1C35 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #0A1C35 text on white | 17.06:1 | AAA | Lc 103.8 | Preferred for body text |
| #0A1C35 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CBDBF1
oklch(88.6% 0.035 256.3)
-
Step 300
300
#A7C3EB
oklch(81% 0.064 257.3)
-
Step 400
400
#77A2E0
oklch(70.6% 0.103 257.5)
-
Step 500
500
#538AD8
oklch(63.1% 0.132 257.3)
-
Step 600
600
#3672C5
oklch(55.5% 0.143 257.2)
-
Step 700
700
#2960AA
oklch(49.2% 0.132 256.9)
-
Step 800
800
#234E8A
oklch(42.6% 0.111 257.3)
-
Step 900
900
#22426E
oklch(37.8% 0.085 256.8)
-
Step 950
950 (this color)
#0A1C35
oklch(22.7% 0.054 257.1)
#0A1C35 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) | #111E36 | 0.012 |
| Deuteranopia (no green cones) | #0A1A34 | 0.007 |
| Tritanopia (no blue cones) | #002225 | 0.044 |
| Achromatopsia (no color) | #1C1C1C | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1C35
#0A1C35
oklch(22.7% 0.054 257.1)
- #281900
#281900
oklch(22.7% 0.047 78.6)
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 #0A1C35, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.021
- Dark #1B2431 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.044
- Navy Blue #001146 ΔE 0.051
- Jet #212529 ΔE 0.057
- Rich Navy #001219 ΔE 0.067
- Night Blue #040348 ΔE 0.076
- Dark Navy #000435 ΔE 0.079
Use #0A1C35 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.