#091C28
Closest named color: Rich Black (#0D1B2A). oklch(21.7% 0.034 238.8), rgb(9, 28, 40).
Aa
White text reads best on this color (17.37:1).
About this color
#091C28 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.034 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.008 away. White text reads best on it, at 17.37:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.37:1 |
Values
| HEX | #091C28 |
| RGB | rgb(9, 28, 40) |
| HSL | hsl(203, 63%, 10%) |
| OKLCH | oklch(21.7% 0.034 238.8) |
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 #091C28 | 17.37:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #091C28 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #091C28 text on white | 17.37:1 | AAA | Lc 104.2 | Preferred for body text |
| #091C28 text on black | 1.20:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#A9C5D8
oklch(80.9% 0.041 237.7)
-
Step 400
400
#7BA7C5
oklch(70.8% 0.065 238.7)
-
Step 500
500
#5791B6
oklch(63.2% 0.083 238)
-
Step 600
600
#3A7AA2
oklch(55.5% 0.09 238.8)
-
Step 700
700
#2C678B
oklch(49.1% 0.084 238.6)
-
Step 800
800
#265471
oklch(42.7% 0.07 239)
-
Step 900
900
#24465B
oklch(37.8% 0.054 237.6)
-
Step 950
950 (this color)
#091C28
oklch(21.7% 0.034 238.8)
#091C28 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) | #161C29 | 0.019 |
| Deuteranopia (no green cones) | #121928 | 0.015 |
| Tritanopia (no blue cones) | #001F20 | 0.025 |
| Achromatopsia (no color) | #1A1A1A | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #091C28
#091C28
oklch(21.7% 0.034 238.8)
- #261609
#261609
oklch(21.8% 0.034 58.7)
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 #091C28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.008
- Dark #1B2431 ΔE 0.043
- Rich Navy #001219 ΔE 0.049
- Jet #212529 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.055
- Almost Black #070D0D ΔE 0.070
- Navy Blue #001146 ΔE 0.072
- Dark Navy #000435 ΔE 0.087
Use #091C28 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.