#012039
Closest named color: Rich Black (#0D1B2A). oklch(23.7% 0.06 246.8), rgb(1, 32, 57).
Aa
White text reads best on this color (16.57:1).
About this color
#012039 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.060 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.031 away. White text reads best on it, at 16.57:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.26:1 |
| White text | 16.57:1 |
Values
| HEX | #012039 |
| RGB | rgb(1, 32, 57) |
| HSL | hsl(207, 97%, 11%) |
| OKLCH | oklch(23.7% 0.06 246.8) |
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 #012039 | 16.57:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #012039 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #012039 text on white | 16.57:1 | AAA | Lc 103.3 | Preferred for body text |
| #012039 text on black | 1.26:1 | 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
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C5DCF2
oklch(88.4% 0.039 247.1)
-
Step 300
300
#9CC6ED
oklch(81% 0.071 246.8)
-
Step 400
400
#61A7E4
oklch(70.7% 0.114 246.6)
-
Step 500
500
#2C8FDC
oklch(63.1% 0.146 246.9)
-
Step 600
600
#0078C3
oklch(55.7% 0.146 246.8)
-
Step 700
700
#0065A5
oklch(49.2% 0.128 246.7)
-
Step 800
800
#005288
oklch(42.7% 0.112 246.9)
-
Step 900
900
#054471
oklch(37.6% 0.096 247.2)
-
Step 950
950 (this color)
#012039
oklch(23.7% 0.06 246.8)
#012039 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) | #14213A | 0.022 |
| Deuteranopia (no green cones) | #0B1C39 | 0.016 |
| Tritanopia (no blue cones) | #002629 | 0.043 |
| Achromatopsia (no color) | #1F1F1F | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #012039
#012039
oklch(23.7% 0.06 246.8)
- #2F1900
#2F1900
oklch(23.8% 0.053 67.1)
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 #012039, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.031
- Dark #1B2431 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.040
- Navy Blue #001146 ΔE 0.054
- Jet #212529 ΔE 0.057
- Rich Navy #001219 ΔE 0.076
- Space Cadet #2B2D42 ΔE 0.077
- Night Blue #040348 ΔE 0.081
Use #012039 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.