#010F31
Closest named color: Dark Navy (#000435). oklch(18.2% 0.072 261), rgb(1, 15, 49).
Aa
White text reads best on this color (18.85:1).
About this color
#010F31 is a very dark, moderately saturated blue. In OKLCH its lightness is 18%, its chroma 0.072 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Navy (#000435), ΔE 0.033 away. White text reads best on it, at 18.85:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dark Navy (#000435) |
| Black text | 1.11:1 |
| White text | 18.85:1 |
Values
| HEX | #010F31 |
| RGB | rgb(1, 15, 49) |
| HSL | hsl(223, 96%, 10%) |
| OKLCH | oklch(18.2% 0.072 261) |
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 #010F31 | 18.85:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #010F31 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #010F31 text on white | 18.85:1 | AAA | Lc 105.1 | Preferred for body text |
| #010F31 text on black | 1.11:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAF9
oklch(88.5% 0.047 261.4)
-
Step 300
300
#A2C2F8
oklch(81% 0.084 260.7)
-
Step 400
400
#6FA0F5
oklch(70.8% 0.136 260.8)
-
Step 500
500
#4985F1
oklch(63.1% 0.174 261.1)
-
Step 600
600
#2B6CE0
oklch(55.7% 0.189 261)
-
Step 700
700
#1E59C2
oklch(49.1% 0.176 261)
-
Step 800
800
#1B499D
oklch(42.6% 0.146 261.2)
-
Step 900
900
#1C3E7D
oklch(37.6% 0.114 261.4)
-
Step 950
950 (this color)
#010F31
oklch(18.2% 0.072 261)
#010F31 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) | #001432 | 0.016 |
| Deuteranopia (no green cones) | #000F30 | 0.003 |
| Tritanopia (no blue cones) | #00181E | 0.055 |
| Achromatopsia (no color) | #111111 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010F31
#010F31
oklch(18.2% 0.072 261)
- #1A1000
#1A1000
oklch(18.2% 0.037 82.5)
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 #010F31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Navy #000435 ΔE 0.033
- Navy Blue #001146 ΔE 0.042
- Dark Navy Blue #00022E ΔE 0.043
- Very Dark Blue #000133 ΔE 0.043
- Midnight #03012D ΔE 0.045
- Night Blue #040348 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.052
- Rich Navy #001219 ΔE 0.053
Use #010F31 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.