#010B23
Closest named color: Rich Navy (#001219). oklch(15.6% 0.054 259.4), rgb(1, 11, 35).
Aa
White text reads best on this color (19.56:1).
About this color
#010B23 is a very dark, muted blue. In OKLCH its lightness is 16%, its chroma 0.054 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.037 away. White text reads best on it, at 19.56:1.
| Hue family | Blues |
| Lightness | very dark (16%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.07:1 |
| White text | 19.56:1 |
Values
| HEX | #010B23 |
| RGB | rgb(1, 11, 35) |
| HSL | hsl(222, 94%, 7%) |
| OKLCH | oklch(15.6% 0.054 259.4) |
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 #010B23 | 19.56:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #010B23 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #010B23 text on white | 19.56:1 | AAA | Lc 105.6 | Preferred for body text |
| #010B23 text on black | 1.07:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A8C2EB
oklch(80.9% 0.065 259.4)
-
Step 400
400
#7AA2E1
oklch(70.8% 0.103 259.2)
-
Step 500
500
#5789D8
oklch(63.1% 0.131 259.2)
-
Step 600
600
#3C71C6
oklch(55.6% 0.144 259.5)
-
Step 700
700
#2E5EAB
oklch(49% 0.134 259.5)
-
Step 800
800
#274D8A
oklch(42.6% 0.11 259.5)
-
Step 900
900
#24416F
oklch(37.7% 0.087 259.3)
-
Step 950
950 (this color)
#010B23
oklch(15.6% 0.054 259.4)
#010B23 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) | #000E24 | 0.010 |
| Deuteranopia (no green cones) | #000A23 | 0.005 |
| Tritanopia (no blue cones) | #001115 | 0.041 |
| Achromatopsia (no color) | #0C0C0C | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010B23
#010B23
oklch(15.6% 0.054 259.4)
- #140A00
#140A00
oklch(15.5% 0.033 76.4)
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 #010B23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.037
- Dark Navy Blue #00022E ΔE 0.038
- Midnight #03012D ΔE 0.039
- Dark Navy #000435 ΔE 0.042
- Very Dark Blue #000133 ΔE 0.045
- Almost Black #070D0D ΔE 0.051
- Rich Black #0D1B2A ΔE 0.065
- Navy Blue #001146 ΔE 0.072
Use #010B23 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.