#0B1E27
Closest named color: Rich Black (#0D1B2A). oklch(22.4% 0.03 230.8), rgb(11, 30, 39).
Aa
White text reads best on this color (17.08:1).
About this color
#0B1E27 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.030 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.014 away. White text reads best on it, at 17.08:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.08:1 |
Values
| HEX | #0B1E27 |
| RGB | rgb(11, 30, 39) |
| HSL | hsl(199, 56%, 10%) |
| OKLCH | oklch(22.4% 0.03 230.8) |
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 #0B1E27 | 17.08:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #0B1E27 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #0B1E27 text on white | 17.08:1 | AAA | Lc 103.9 | Preferred for body text |
| #0B1E27 text on black | 1.22:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#AAC5D4
oklch(80.8% 0.036 232.2)
-
Step 400
400
#7CA8BE
oklch(70.8% 0.057 230.2)
-
Step 500
500
#5892AE
oklch(63.1% 0.074 230.4)
-
Step 600
600
#3C7C9A
oklch(55.7% 0.08 230.9)
-
Step 700
700
#2D6883
oklch(49% 0.075 230.8)
-
Step 800
800
#27556B
oklch(42.7% 0.062 231.5)
-
Step 900
900
#254656
oklch(37.6% 0.047 230.9)
-
Step 950
950 (this color)
#0B1E27
oklch(22.4% 0.03 230.8)
#0B1E27 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) | #191D27 | 0.020 |
| Deuteranopia (no green cones) | #161A27 | 0.020 |
| Tritanopia (no blue cones) | #002021 | 0.021 |
| Achromatopsia (no color) | #1C1C1C | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1E27
#0B1E27
oklch(22.4% 0.03 230.8)
- #27170E
#27170E
oklch(22.3% 0.031 50)
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 #0B1E27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.014
- Dark #1B2431 ΔE 0.037
- Jet #212529 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.051
- Rich Navy #001219 ΔE 0.055
- Almost Black #070D0D ΔE 0.075
- Navy Blue #001146 ΔE 0.079
- Space Cadet #2B2D42 ΔE 0.086
Use #0B1E27 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.