#012142
Closest named color: Oxford Blue (#1B263B). oklch(24.7% 0.073 252.4), rgb(1, 33, 66).
Aa
White text reads best on this color (16.18:1).
About this color
#012142 is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.073 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.039 away. White text reads best on it, at 16.18:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.18:1 |
Values
| HEX | #012142 |
| RGB | rgb(1, 33, 66) |
| HSL | hsl(210, 97%, 13%) |
| OKLCH | oklch(24.7% 0.073 252.4) |
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 #012142 | 16.18:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #012142 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #012142 text on white | 16.18:1 | AAA | Lc 102.8 | Preferred for body text |
| #012142 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEEBFB
oklch(93.5% 0.026 253.6)
-
Step 200
200
#C3DCF9
oklch(88.5% 0.048 252.2)
-
Step 300
300
#99C5F7
oklch(81% 0.085 252.1)
-
Step 400
400
#5CA4F4
oklch(70.7% 0.139 252.5)
-
Step 500
500
#218BEF
oklch(63.1% 0.175 252.2)
-
Step 600
600
#0074D1
oklch(55.7% 0.167 252.1)
-
Step 700
700
#0061B1
oklch(49.1% 0.148 252.3)
-
Step 800
800
#004F93
oklch(42.7% 0.13 252.6)
-
Step 900
900
#00427B
oklch(37.7% 0.113 252.1)
-
Step 950
950 (this color)
#012142
oklch(24.7% 0.073 252.4)
#012142 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) | #0F2443 | 0.019 |
| Deuteranopia (no green cones) | #031E41 | 0.010 |
| Tritanopia (no blue cones) | #00292E | 0.053 |
| Achromatopsia (no color) | #212121 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #012142
#012142
oklch(24.7% 0.073 252.4)
- #301C00
#301C00
oklch(24.7% 0.053 72.4)
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 #012142, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.039
- Dark #1B2431 ΔE 0.046
- Rich Black #0D1B2A ΔE 0.047
- Navy Blue #001146 ΔE 0.049
- Jet #212529 ΔE 0.065
- Marine #042E60 ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.072
- Dark Indigo #1F0954 ΔE 0.074
Use #012142 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.