#101534
Closest named color: Rich Black (#0D1B2A). oklch(21.1% 0.061 273.2), rgb(16, 21, 52).
Aa
White text reads best on this color (17.81:1).
About this color
#101534 is a very dark, muted blue. In OKLCH its lightness is 21%, its chroma 0.061 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.032 away. White text reads best on it, at 17.81:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.81:1 |
Values
| HEX | #101534 |
| RGB | rgb(16, 21, 52) |
| HSL | hsl(232, 53%, 13%) |
| OKLCH | oklch(21.1% 0.061 273.2) |
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 #101534 | 17.81:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #101534 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #101534 text on white | 17.81:1 | AAA | Lc 104.5 | Preferred for body text |
| #101534 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F4
oklch(88.5% 0.04 272.9)
-
Step 300
300
#B1BEF0
oklch(80.9% 0.072 273.3)
-
Step 400
400
#899BE8
oklch(70.7% 0.115 273.1)
-
Step 500
500
#6D80E2
oklch(63% 0.148 273.2)
-
Step 600
600
#5767CF
oklch(55.5% 0.16 273.5)
-
Step 700
700
#4755B4
oklch(49% 0.15 273.3)
-
Step 800
800
#3A4691
oklch(42.6% 0.123 273.2)
-
Step 900
900
#323C74
oklch(37.8% 0.096 273.3)
-
Step 950
950 (this color)
#101534
oklch(21.1% 0.061 273.2)
#101534 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) | #051935 | 0.018 |
| Deuteranopia (no green cones) | #021633 | 0.020 |
| Tritanopia (no blue cones) | #001C22 | 0.053 |
| Achromatopsia (no color) | #181818 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101534
#101534
oklch(21.1% 0.061 273.2)
- #1F1800
#1F1800
oklch(21.1% 0.043 94.5)
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 #101534, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.032
- Navy Blue #001146 ΔE 0.044
- Dark #1B2431 ΔE 0.058
- Oxford Blue #1B263B ΔE 0.062
- Night Blue #040348 ΔE 0.063
- Dark Navy #000435 ΔE 0.063
- Rich Navy #001219 ΔE 0.063
- Midnight Purple #280137 ΔE 0.068
Use #101534 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.