#091827
Closest named color: Rich Black (#0D1B2A). oklch(20.4% 0.037 250), rgb(9, 24, 39).
Aa
White text reads best on this color (17.92:1).
About this color
#091827 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.037 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.013 away. White text reads best on it, at 17.92:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.92:1 |
Values
| HEX | #091827 |
| RGB | rgb(9, 24, 39) |
| HSL | hsl(210, 63%, 9%) |
| OKLCH | oklch(20.4% 0.037 250) |
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 #091827 | 17.92:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #091827 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #091827 text on white | 17.92:1 | AAA | Lc 104.6 | Preferred for body text |
| #091827 text on black | 1.17:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ACC3DC
oklch(80.8% 0.043 250.6)
-
Step 400
400
#80A4CB
oklch(70.6% 0.07 250.8)
-
Step 500
500
#5F8DBD
oklch(63% 0.089 250.4)
-
Step 600
600
#4477AA
oklch(55.6% 0.097 250)
-
Step 700
700
#366491
oklch(49.1% 0.089 249.6)
-
Step 800
800
#2D5276
oklch(42.8% 0.074 249.3)
-
Step 900
900
#29445F
oklch(37.8% 0.057 249.6)
-
Step 950
950 (this color)
#091827
oklch(20.4% 0.037 250)
#091827 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) | #121928 | 0.014 |
| Deuteranopia (no green cones) | #0E1627 | 0.009 |
| Tritanopia (no blue cones) | #001B1D | 0.029 |
| Achromatopsia (no color) | #171717 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #091827
#091827
oklch(20.4% 0.037 250)
- #221404
#221404
oklch(20.6% 0.036 69.3)
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 #091827, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.013
- Rich Navy #001219 ΔE 0.039
- Dark #1B2431 ΔE 0.054
- Almost Black #070D0D ΔE 0.061
- Jet #212529 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.066
- Navy Blue #001146 ΔE 0.067
- Dark Navy #000435 ΔE 0.075
Use #091827 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.