#012337
Closest named color: Dark (#1B2431). oklch(24.4% 0.054 239.5), rgb(1, 35, 55).
Aa
White text reads best on this color (16.19:1).
About this color
#012337 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.054 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.032 away. White text reads best on it, at 16.19:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.29:1 |
| White text | 16.19:1 |
Values
| HEX | #012337 |
| RGB | rgb(1, 35, 55) |
| HSL | hsl(202, 96%, 11%) |
| OKLCH | oklch(24.4% 0.054 239.5) |
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 #012337 | 16.19:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #012337 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #012337 text on white | 16.19:1 | AAA | Lc 102.9 | Preferred for body text |
| #012337 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C5DDEF
oklch(88.5% 0.036 240.3)
-
Step 300
300
#9BC7E6
oklch(80.9% 0.064 239.3)
-
Step 400
400
#60A9DA
oklch(70.7% 0.103 239.8)
-
Step 500
500
#2592D0
oklch(63% 0.132 239.9)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006899
oklch(49.2% 0.111 239.3)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#00466A
oklch(37.6% 0.086 240.1)
-
Step 950
950 (this color)
#012337
oklch(24.4% 0.054 239.5)
#012337 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) | #192338 | 0.027 |
| Deuteranopia (no green cones) | #121E37 | 0.023 |
| Tritanopia (no blue cones) | #00282A | 0.035 |
| Achromatopsia (no color) | #212121 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #012337
#012337
oklch(24.4% 0.054 239.5)
- #331902
#331902
oklch(24.5% 0.055 59.3)
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 #012337, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.032
- Rich Black #0D1B2A ΔE 0.033
- Oxford Blue #1B263B ΔE 0.034
- Jet #212529 ΔE 0.048
- Navy Blue #001146 ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.070
- Gunmetal #293241 ΔE 0.077
- Rich Navy #001219 ΔE 0.079
Use #012337 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.