#010A17
Closest named color: Rich Navy (#001219). oklch(14.2% 0.034 249.5), rgb(1, 10, 23).
Aa
White text reads best on this color (19.86:1).
About this color
#010A17 is a very dark, muted blue. In OKLCH its lightness is 14%, its chroma 0.034 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.031 away. White text reads best on it, at 19.86:1.
| Hue family | Blues |
| Lightness | very dark (14%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.05:1 |
| White text | 19.86:1 |
Values
| HEX | #010A17 |
| RGB | rgb(1, 10, 23) |
| HSL | hsl(215, 92%, 5%) |
| OKLCH | oklch(14.2% 0.034 249.5) |
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 #010A17 | 19.86:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #010A17 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #010A17 text on white | 19.86:1 | AAA | Lc 105.8 | Preferred for body text |
| #010A17 text on black | 1.05:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ADC3DB
oklch(80.8% 0.042 250.6)
-
Step 400
400
#81A4C8
oklch(70.6% 0.066 249.5)
-
Step 500
500
#618DBA
oklch(63% 0.084 249.8)
-
Step 600
600
#4777A6
oklch(55.6% 0.09 249.3)
-
Step 700
700
#38648F
oklch(49.1% 0.085 249.4)
-
Step 800
800
#2F5274
oklch(42.8% 0.07 249.1)
-
Step 900
900
#2A445D
oklch(37.7% 0.054 248.5)
-
Step 950
950 (this color)
#010A17
oklch(14.2% 0.034 249.5)
#010A17 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) | #050B18 | 0.012 |
| Deuteranopia (no green cones) | #030817 | 0.009 |
| Tritanopia (no blue cones) | #000D0F | 0.024 |
| Achromatopsia (no color) | #090909 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010A17
#010A17
oklch(14.2% 0.034 249.5)
- #110700
#110700
oklch(14.1% 0.03 71)
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 #010A17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.031
- Almost Black #070D0D ΔE 0.032
- Dark Navy Blue #00022E ΔE 0.057
- Midnight #03012D ΔE 0.057
- Dark Navy #000435 ΔE 0.065
- Very Dark Blue #000133 ΔE 0.066
- Rich Black #0D1B2A ΔE 0.076
- Very Dark Brown #1D0200 ΔE 0.085
Use #010A17 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.