#010F2B
Closest named color: Dark Navy (#000435). oklch(17.6% 0.062 258.8), rgb(1, 15, 43).
Aa
White text reads best on this color (19.01:1).
About this color
#010F2B is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.062 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Navy (#000435), ΔE 0.038 away. White text reads best on it, at 19.01:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dark Navy (#000435) |
| Black text | 1.10:1 |
| White text | 19.01:1 |
Values
| HEX | #010F2B |
| RGB | rgb(1, 15, 43) |
| HSL | hsl(220, 95%, 9%) |
| OKLCH | oklch(17.6% 0.062 258.8) |
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 #010F2B | 19.01:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #010F2B | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #010F2B text on white | 19.01:1 | AAA | Lc 105.2 | Preferred for body text |
| #010F2B text on black | 1.10:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DAF5
oklch(88.4% 0.042 259.6)
-
Step 300
300
#A4C2F0
oklch(80.8% 0.073 258.8)
-
Step 400
400
#73A1E9
oklch(70.6% 0.117 259.1)
-
Step 500
500
#4E88E3
oklch(63.1% 0.15 259.1)
-
Step 600
600
#3070D0
oklch(55.6% 0.162 258.6)
-
Step 700
700
#235DB5
oklch(49.1% 0.152 258.9)
-
Step 800
800
#1F4D92
oklch(42.8% 0.125 258.6)
-
Step 900
900
#1F4074
oklch(37.6% 0.097 259.2)
-
Step 950
950 (this color)
#010F2B
oklch(17.6% 0.062 258.8)
#010F2B 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) | #00122C | 0.010 |
| Deuteranopia (no green cones) | #000E2A | 0.005 |
| Tritanopia (no blue cones) | #00161B | 0.046 |
| Achromatopsia (no color) | #101010 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010F2B
#010F2B
oklch(17.6% 0.062 258.8)
- #190E00
#190E00
oklch(17.5% 0.036 78)
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 #010F2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Navy #000435 ΔE 0.038
- Rich Navy #001219 ΔE 0.041
- Dark Navy Blue #00022E ΔE 0.044
- Midnight #03012D ΔE 0.045
- Very Dark Blue #000133 ΔE 0.046
- Rich Black #0D1B2A ΔE 0.050
- Navy Blue #001146 ΔE 0.054
- Night Blue #040348 ΔE 0.061
Use #010F2B 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.