#010B1D
Closest named color: Rich Navy (#001219). oklch(15% 0.044 255), rgb(1, 11, 29).
Aa
White text reads best on this color (19.68:1).
About this color
#010B1D is a very dark, muted blue. In OKLCH its lightness is 15%, its chroma 0.044 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.030 away. White text reads best on it, at 19.68:1.
| Hue family | Blues |
| Lightness | very dark (15%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.06:1 |
| White text | 19.68:1 |
Values
| HEX | #010B1D |
| RGB | rgb(1, 11, 29) |
| HSL | hsl(219, 93%, 6%) |
| OKLCH | oklch(15% 0.044 255) |
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 #010B1D | 19.68:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #010B1D | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #010B1D text on white | 19.68:1 | AAA | Lc 105.7 | Preferred for body text |
| #010B1D text on black | 1.06:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CDDBEC
oklch(88.6% 0.028 253.2)
-
Step 300
300
#ABC3E2
oklch(80.9% 0.051 254.9)
-
Step 400
400
#7DA3D4
oklch(70.6% 0.083 255.1)
-
Step 500
500
#5C8CC8
oklch(63.1% 0.105 254.6)
-
Step 600
600
#4175B5
oklch(55.6% 0.115 254.7)
-
Step 700
700
#33629C
oklch(49.2% 0.107 254.8)
-
Step 800
800
#2B507E
oklch(42.7% 0.088 254.9)
-
Step 900
900
#274366
oklch(37.8% 0.069 254.8)
-
Step 950
950 (this color)
#010B1D
oklch(15% 0.044 255)
#010B1D 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) | #030D1E | 0.010 |
| Deuteranopia (no green cones) | #010A1D | 0.004 |
| Tritanopia (no blue cones) | #000F12 | 0.032 |
| Achromatopsia (no color) | #0B0B0B | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010B1D
#010B1D
oklch(15% 0.044 255)
- #130900
#130900
oklch(15.1% 0.032 75)
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 #010B1D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.030
- Almost Black #070D0D ΔE 0.040
- Dark Navy Blue #00022E ΔE 0.048
- Midnight #03012D ΔE 0.048
- Dark Navy #000435 ΔE 0.054
- Very Dark Blue #000133 ΔE 0.056
- Rich Black #0D1B2A ΔE 0.068
- Navy Blue #001146 ΔE 0.084
Use #010B1D 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.