#011834
Closest named color: Rich Black (#0D1B2A). oklch(20.9% 0.063 253.7), rgb(1, 24, 52).
Aa
White text reads best on this color (17.77:1).
About this color
#011834 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.063 and its hue 254°. 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 17.77:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.77:1 |
Values
| HEX | #011834 |
| RGB | rgb(1, 24, 52) |
| HSL | hsl(213, 96%, 10%) |
| OKLCH | oklch(20.9% 0.063 253.7) |
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 #011834 | 17.77:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #011834 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #011834 text on white | 17.77:1 | AAA | Lc 104.3 | Preferred for body text |
| #011834 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
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C7DBF5
oklch(88.5% 0.042 255)
-
Step 300
300
#9FC4F1
oklch(80.9% 0.075 253.6)
-
Step 400
400
#69A4E9
oklch(70.7% 0.119 253.2)
-
Step 500
500
#3D8BE3
oklch(63.1% 0.153 253.7)
-
Step 600
600
#1473D1
oklch(55.6% 0.166 253.7)
-
Step 700
700
#0060B5
oklch(49.2% 0.155 253.6)
-
Step 800
800
#0A4F92
oklch(42.8% 0.127 253.4)
-
Step 900
900
#144275
oklch(37.7% 0.1 253.9)
-
Step 950
950 (this color)
#011834
oklch(20.9% 0.063 253.7)
#011834 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) | #091A35 | 0.014 |
| Deuteranopia (no green cones) | #001633 | 0.008 |
| Tritanopia (no blue cones) | #001F23 | 0.047 |
| Achromatopsia (no color) | #181818 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #011834
#011834
oklch(20.9% 0.063 253.7)
- #241400
#241400
oklch(20.8% 0.044 72.7)
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 #011834, 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 0.041
- Rich Navy #001219 ΔE 0.057
- Dark #1B2431 ΔE 0.060
- Dark Navy #000435 ΔE 0.061
- Night Blue #040348 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.064
- Very Dark Blue #000133 ΔE 0.072
Use #011834 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.