#00091C
Closest named color: Rich Navy (#001219). oklch(14.2% 0.046 254.8), rgb(0, 9, 28).
Aa
White text reads best on this color (19.88:1).
About this color
#00091C is a very dark, muted blue. In OKLCH its lightness is 14%, its chroma 0.046 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.038 away. White text reads best on it, at 19.88:1.
| Hue family | Blues |
| Lightness | very dark (14%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.05:1 |
| White text | 19.88:1 |
Values
| HEX | #00091C |
| RGB | rgb(0, 9, 28) |
| HSL | hsl(221, 100%, 5%) |
| OKLCH | oklch(14.2% 0.046 254.8) |
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 #00091C | 19.88:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #00091C | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #00091C text on white | 19.88:1 | AAA | Lc 105.8 | Preferred for body text |
| #00091C 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBEE
oklch(88.6% 0.031 254.3)
-
Step 300
300
#A9C3E4
oklch(80.9% 0.055 254.5)
-
Step 400
400
#7BA3D7
oklch(70.6% 0.088 255.3)
-
Step 500
500
#588CCC
oklch(63.1% 0.112 254.4)
-
Step 600
600
#3D75B9
oklch(55.7% 0.122 254.6)
-
Step 700
700
#2F629F
oklch(49.2% 0.113 254.4)
-
Step 800
800
#285081
oklch(42.7% 0.094 254.7)
-
Step 900
900
#254368
oklch(37.8% 0.073 254.6)
-
Step 950
950 (this color)
#00091C
oklch(14.2% 0.046 254.8)
#00091C 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) | #020B1D | 0.011 |
| Deuteranopia (no green cones) | #00081C | 0.004 |
| Tritanopia (no blue cones) | #000E11 | 0.035 |
| Achromatopsia (no color) | #090909 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00091C
#00091C
oklch(14.2% 0.046 254.8)
- #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 #00091C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.038
- Almost Black #070D0D ΔE 0.043
- Dark Navy Blue #00022E ΔE 0.045
- Midnight #03012D ΔE 0.045
- Dark Navy #000435 ΔE 0.053
- Very Dark Blue #000133 ΔE 0.054
- Rich Black #0D1B2A ΔE 0.077
- Navy Blue #001146 ΔE 0.089
Use #00091C 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.