#010C19
Closest named color: Rich Navy (#001219). oklch(15% 0.035 247), rgb(1, 12, 25).
Aa
White text reads best on this color (19.66:1).
About this color
#010C19 is a very dark, muted blue. In OKLCH its lightness is 15%, its chroma 0.035 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.024 away. White text reads best on it, at 19.66:1.
| Hue family | Blues |
| Lightness | very dark (15%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.06:1 |
| White text | 19.66:1 |
Values
| HEX | #010C19 |
| RGB | rgb(1, 12, 25) |
| HSL | hsl(213, 92%, 5%) |
| OKLCH | oklch(15% 0.035 247) |
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 #010C19 | 19.66:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #010C19 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #010C19 text on white | 19.66:1 | AAA | Lc 105.7 | Preferred for body text |
| #010C19 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ACC4DB
oklch(81% 0.042 247.2)
-
Step 400
400
#7FA5C8
oklch(70.7% 0.066 246.7)
-
Step 500
500
#5E8EBB
oklch(63.1% 0.086 247.8)
-
Step 600
600
#4378A7
oklch(55.7% 0.093 247.1)
-
Step 700
700
#34658F
oklch(49.2% 0.086 246.6)
-
Step 800
800
#2C5274
oklch(42.6% 0.072 247.3)
-
Step 900
900
#28445E
oklch(37.7% 0.056 247.8)
-
Step 950
950 (this color)
#010C19
oklch(15% 0.035 247)
#010C19 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) | #060D1A | 0.013 |
| Deuteranopia (no green cones) | #030A19 | 0.009 |
| Tritanopia (no blue cones) | #000F11 | 0.024 |
| Achromatopsia (no color) | #0B0B0B | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010C19
#010C19
oklch(15% 0.035 247)
- #140800
#140800
oklch(15% 0.033 67.6)
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 #010C19, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.024
- Almost Black #070D0D ΔE 0.030
- Dark Navy Blue #00022E ΔE 0.057
- Midnight #03012D ΔE 0.058
- Dark Navy #000435 ΔE 0.064
- Very Dark Blue #000133 ΔE 0.066
- Rich Black #0D1B2A ΔE 0.068
- Very Dark Brown #1D0200 ΔE 0.086
Use #010C19 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.