#030B17
Closest named color: Almost Black (#070D0D). oklch(14.7% 0.03 253.3), rgb(3, 11, 23).
Aa
White text reads best on this color (19.73:1).
About this color
#030B17 is a very dark, muted blue. In OKLCH its lightness is 15%, its chroma 0.030 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.027 away. White text reads best on it, at 19.73:1.
| Hue family | Blues |
| Lightness | very dark (15%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.06:1 |
| White text | 19.73:1 |
Values
| HEX | #030B17 |
| RGB | rgb(3, 11, 23) |
| HSL | hsl(216, 77%, 5%) |
| OKLCH | oklch(14.7% 0.03 253.3) |
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 #030B17 | 19.73:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #030B17 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #030B17 text on white | 19.73:1 | AAA | Lc 105.8 | Preferred for body text |
| #030B17 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
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B1C2D8
oklch(80.8% 0.036 254.9)
-
Step 400
400
#88A3C4
oklch(70.7% 0.057 253.7)
-
Step 500
500
#6A8CB5
oklch(63.1% 0.073 253.5)
-
Step 600
600
#5176A1
oklch(55.6% 0.079 252.9)
-
Step 700
700
#42638A
oklch(49.2% 0.074 253.3)
-
Step 800
800
#365170
oklch(42.7% 0.061 252.6)
-
Step 900
900
#2F435B
oklch(37.7% 0.049 253.5)
-
Step 950
950 (this color)
#030B17
oklch(14.7% 0.03 253.3)
#030B17 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) | #060C18 | 0.009 |
| Deuteranopia (no green cones) | #040A17 | 0.004 |
| Tritanopia (no blue cones) | #000E0F | 0.026 |
| Achromatopsia (no color) | #0B0B0B | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #030B17
#030B17
oklch(14.7% 0.03 253.3)
- #120800
#120800
oklch(14.6% 0.031 73.2)
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 #030B17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.027
- Rich Navy #001219 ΔE 0.027
- Midnight #03012D ΔE 0.060
- Dark Navy Blue #00022E ΔE 0.060
- Dark Navy #000435 ΔE 0.067
- Very Dark Blue #000133 ΔE 0.069
- Rich Black #0D1B2A ΔE 0.070
- Very Dark Brown #1D0200 ΔE 0.080
Use #030B17 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.