#09101F
Closest named color: Rich Navy (#001219). oklch(17.5% 0.033 264.2), rgb(9, 16, 31).
Aa
White text reads best on this color (18.99:1).
About this color
#09101F is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.033 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.024 away. White text reads best on it, at 18.99:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 18.99:1 |
Values
| HEX | #09101F |
| RGB | rgb(9, 16, 31) |
| HSL | hsl(221, 55%, 8%) |
| OKLCH | oklch(17.5% 0.033 264.2) |
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 #09101F | 18.99:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #09101F | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #09101F text on white | 18.99:1 | AAA | Lc 105.4 | Preferred for body text |
| #09101F 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B4C1DB
oklch(80.9% 0.039 264.3)
-
Step 400
400
#8DA1C9
oklch(70.8% 0.063 264)
-
Step 500
500
#7189BB
oklch(63.1% 0.081 264.4)
-
Step 600
600
#5972A7
oklch(55.5% 0.088 264.4)
-
Step 700
700
#49608F
oklch(49.2% 0.081 263.8)
-
Step 800
800
#3C4E74
oklch(42.6% 0.068 264.4)
-
Step 900
900
#33415E
oklch(37.6% 0.053 264.2)
-
Step 950
950 (this color)
#09101F
oklch(17.5% 0.033 264.2)
#09101F 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) | #0A1120 | 0.004 |
| Deuteranopia (no green cones) | #080F1F | 0.004 |
| Tritanopia (no blue cones) | #021316 | 0.028 |
| Achromatopsia (no color) | #101010 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09101F
#09101F
oklch(17.5% 0.033 264.2)
- #170F01
#170F01
oklch(17.5% 0.033 84.8)
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 #09101F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.024
- Almost Black #070D0D ΔE 0.038
- Rich Black #0D1B2A ΔE 0.044
- Midnight #03012D ΔE 0.064
- Dark Navy #000435 ΔE 0.064
- Dark Navy Blue #00022E ΔE 0.065
- Very Dark Blue #000133 ΔE 0.071
- Navy Blue #001146 ΔE 0.078
Use #09101F 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.