#091E37
Closest named color: Rich Black (#0D1B2A). oklch(23.3% 0.055 254.5), rgb(9, 30, 55).
Aa
White text reads best on this color (16.76:1).
About this color
#091E37 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.055 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.025 away. White text reads best on it, at 16.76:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.25:1 |
| White text | 16.76:1 |
Values
| HEX | #091E37 |
| RGB | rgb(9, 30, 55) |
| HSL | hsl(213, 72%, 13%) |
| OKLCH | oklch(23.3% 0.055 254.5) |
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 #091E37 | 16.76:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #091E37 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #091E37 text on white | 16.76:1 | AAA | Lc 103.5 | Preferred for body text |
| #091E37 text on black | 1.25:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A4C3EB
oklch(80.8% 0.066 254.9)
-
Step 400
400
#72A4E1
oklch(70.8% 0.105 254)
-
Step 500
500
#4C8BD8
oklch(63% 0.134 254.6)
-
Step 600
600
#2C74C6
oklch(55.7% 0.146 254.2)
-
Step 700
700
#1F61AB
oklch(49.2% 0.135 254.3)
-
Step 800
800
#1C4F8B
oklch(42.7% 0.113 254.8)
-
Step 900
900
#1D426F
oklch(37.6% 0.088 254.8)
-
Step 950
950 (this color)
#091E37
oklch(23.3% 0.055 254.5)
#091E37 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) | #122038 | 0.014 |
| Deuteranopia (no green cones) | #0B1C36 | 0.007 |
| Tritanopia (no blue cones) | #002427 | 0.044 |
| Achromatopsia (no color) | #1D1D1D | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #091E37
#091E37
oklch(23.3% 0.055 254.5)
- #2B1A00
#2B1A00
oklch(23.4% 0.049 75.8)
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 #091E37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.025
- Dark #1B2431 ΔE 0.037
- Oxford Blue #1B263B ΔE 0.039
- Navy Blue #001146 ΔE 0.053
- Jet #212529 ΔE 0.054
- Rich Navy #001219 ΔE 0.072
- Space Cadet #2B2D42 ΔE 0.076
- Night Blue #040348 ΔE 0.079
Use #091E37 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.