#090F21
Closest named color: Rich Navy (#001219). oklch(17.4% 0.039 268.2), rgb(9, 15, 33).
Aa
White text reads best on this color (19.05:1).
About this color
#090F21 is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.039 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.028 away. White text reads best on it, at 19.05:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 19.05:1 |
Values
| HEX | #090F21 |
| RGB | rgb(9, 15, 33) |
| HSL | hsl(225, 57%, 8%) |
| OKLCH | oklch(17.4% 0.039 268.2) |
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 #090F21 | 19.05:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #090F21 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #090F21 text on white | 19.05:1 | AAA | Lc 105.4 | Preferred for body text |
| #090F21 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EB
oklch(88.5% 0.026 268.8)
-
Step 300
300
#B4C0DF
oklch(80.9% 0.046 268.6)
-
Step 400
400
#8D9FCF
oklch(70.6% 0.073 268.5)
-
Step 500
500
#7187C3
oklch(63.1% 0.094 268.2)
-
Step 600
600
#5A70AF
oklch(55.6% 0.102 268.4)
-
Step 700
700
#4A5E96
oklch(49.2% 0.093 268)
-
Step 800
800
#3D4D7A
oklch(42.8% 0.078 268.2)
-
Step 900
900
#344062
oklch(37.7% 0.061 268.6)
-
Step 950
950 (this color)
#090F21
oklch(17.4% 0.039 268.2)
#090F21 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) | #081122 | 0.007 |
| Deuteranopia (no green cones) | #050F21 | 0.007 |
| Tritanopia (no blue cones) | #011316 | 0.035 |
| Achromatopsia (no color) | #101010 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #090F21
#090F21
oklch(17.4% 0.039 268.2)
- #170F00
#170F00
oklch(17.4% 0.036 87)
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 #090F21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.028
- Almost Black #070D0D ΔE 0.042
- Rich Black #0D1B2A ΔE 0.046
- Midnight #03012D ΔE 0.059
- Dark Navy #000435 ΔE 0.059
- Dark Navy Blue #00022E ΔE 0.060
- Very Dark Blue #000133 ΔE 0.065
- Navy Blue #001146 ΔE 0.074
Use #090F21 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.