#101B32
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.048 263.7), rgb(16, 27, 50).
Aa
White text reads best on this color (17.14:1).
About this color
#101B32 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.048 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.017 away. White text reads best on it, at 17.14:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.14:1 |
Values
| HEX | #101B32 |
| RGB | rgb(16, 27, 50) |
| HSL | hsl(221, 52%, 13%) |
| OKLCH | oklch(22.5% 0.048 263.7) |
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 #101B32 | 17.14:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #101B32 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #101B32 text on white | 17.14:1 | AAA | Lc 104.0 | Preferred for body text |
| #101B32 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFDAEF
oklch(88.6% 0.031 263.5)
-
Step 300
300
#AEC1E6
oklch(80.9% 0.056 263.7)
-
Step 400
400
#84A0DA
oklch(70.7% 0.091 264.3)
-
Step 500
500
#6588CF
oklch(63.1% 0.115 263.5)
-
Step 600
600
#4C70BC
oklch(55.5% 0.126 263.7)
-
Step 700
700
#3D5EA3
oklch(49.2% 0.117 263.4)
-
Step 800
800
#334D84
oklch(42.8% 0.097 263.7)
-
Step 900
900
#2C406A
oklch(37.6% 0.077 263.8)
-
Step 950
950 (this color)
#101B32
oklch(22.5% 0.048 263.7)
#101B32 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) | #111D33 | 0.007 |
| Deuteranopia (no green cones) | #0D1A32 | 0.006 |
| Tritanopia (no blue cones) | #002024 | 0.042 |
| Achromatopsia (no color) | #1B1B1B | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101B32
#101B32
oklch(22.5% 0.048 263.7)
- #261900
#261900
oklch(22.4% 0.046 82.5)
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 #101B32, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.017
- Dark #1B2431 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.044
- Jet #212529 ΔE 0.053
- Navy Blue #001146 ΔE 0.056
- Rich Navy #001219 ΔE 0.065
- Night Blue #040348 ΔE 0.080
- Dark Indigo #1F0954 ΔE 0.081
Use #101B32 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.