#091623
Closest named color: Rich Black (#0D1B2A). oklch(19.6% 0.032 249.7), rgb(9, 22, 35).
Aa
White text reads best on this color (18.25:1).
About this color
#091623 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.032 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 18.25:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.25:1 |
Values
| HEX | #091623 |
| RGB | rgb(9, 22, 35) |
| HSL | hsl(210, 59%, 9%) |
| OKLCH | oklch(19.6% 0.032 249.7) |
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 #091623 | 18.25:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #091623 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #091623 text on white | 18.25:1 | AAA | Lc 104.9 | Preferred for body text |
| #091623 text on black | 1.15:1 | 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
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AFC3D9
oklch(80.9% 0.038 250.8)
-
Step 400
400
#84A4C6
oklch(70.7% 0.061 250.2)
-
Step 500
500
#648DB7
oklch(63% 0.078 249.7)
-
Step 600
600
#4B77A3
oklch(55.6% 0.084 249.6)
-
Step 700
700
#3C648C
oklch(49.2% 0.079 249.7)
-
Step 800
800
#325271
oklch(42.8% 0.064 248.8)
-
Step 900
900
#2C445C
oklch(37.8% 0.051 249.3)
-
Step 950
950 (this color)
#091623
oklch(19.6% 0.032 249.7)
#091623 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) | #111624 | 0.013 |
| Deuteranopia (no green cones) | #0D1423 | 0.009 |
| Tritanopia (no blue cones) | #00191B | 0.027 |
| Achromatopsia (no color) | #151515 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #091623
#091623
oklch(19.6% 0.032 249.7)
- #1E1205
#1E1205
oklch(19.5% 0.031 68.4)
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 #091623, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Rich Navy #001219 ΔE 0.030
- Almost Black #070D0D ΔE 0.051
- Dark #1B2431 ΔE 0.063
- Jet #212529 ΔE 0.070
- Navy Blue #001146 ΔE 0.073
- Dark Navy #000435 ΔE 0.074
- Oxford Blue #1B263B ΔE 0.075
Use #091623 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.