#091B2F
Closest named color: Rich Black (#0D1B2A). oklch(21.9% 0.046 252.7), rgb(9, 27, 47).
Aa
White text reads best on this color (17.36:1).
About this color
#091B2F is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.046 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.011 away. White text reads best on it, at 17.36:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.36:1 |
Values
| HEX | #091B2F |
| RGB | rgb(9, 27, 47) |
| HSL | hsl(212, 68%, 11%) |
| OKLCH | oklch(21.9% 0.046 252.7) |
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 #091B2F | 17.36:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #091B2F | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #091B2F text on white | 17.36:1 | AAA | Lc 104.1 | Preferred for body text |
| #091B2F 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A8C3E4
oklch(80.8% 0.055 253.6)
-
Step 400
400
#79A4D6
oklch(70.7% 0.087 252.7)
-
Step 500
500
#558DCB
oklch(63.2% 0.111 252.2)
-
Step 600
600
#3976B8
oklch(55.7% 0.121 252.4)
-
Step 700
700
#2B629F
oklch(49% 0.114 253.2)
-
Step 800
800
#255181
oklch(42.8% 0.094 252.6)
-
Step 900
900
#234367
oklch(37.7% 0.073 252.7)
-
Step 950
950 (this color)
#091B2F
oklch(21.9% 0.046 252.7)
#091B2F 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) | #121C30 | 0.013 |
| Deuteranopia (no green cones) | #0D192F | 0.008 |
| Tritanopia (no blue cones) | #002022 | 0.038 |
| Achromatopsia (no color) | #1A1A1A | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #091B2F
#091B2F
oklch(21.9% 0.046 252.7)
- #271600
#271600
oklch(21.8% 0.047 72.6)
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 #091B2F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.011
- Dark #1B2431 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.051
- Rich Navy #001219 ΔE 0.056
- Jet #212529 ΔE 0.057
- Navy Blue #001146 ΔE 0.058
- Dark Navy #000435 ΔE 0.078
- Almost Black #070D0D ΔE 0.078
Use #091B2F 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.