#101A42
Closest named color: Navy Blue (#001146). oklch(23.6% 0.077 269.2), rgb(16, 26, 66).
Aa
White text reads best on this color (16.82:1).
About this color
#101A42 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.077 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.037 away. White text reads best on it, at 16.82:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.24:1 |
| White text | 16.82:1 |
Values
| HEX | #101A42 |
| RGB | rgb(16, 26, 66) |
| HSL | hsl(228, 61%, 16%) |
| OKLCH | oklch(23.6% 0.077 269.2) |
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 #101A42 | 16.82:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #101A42 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #101A42 text on white | 16.82:1 | AAA | Lc 103.6 | Preferred for body text |
| #101A42 text on black | 1.24:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CBD8FC
oklch(88.4% 0.052 269.6)
-
Step 300
300
#A9BFFC
oklch(81% 0.09 269)
-
Step 400
400
#7C9BFB
oklch(70.8% 0.145 269)
-
Step 500
500
#5D7EF8
oklch(63.1% 0.185 269.1)
-
Step 600
600
#4663E7
oklch(55.5% 0.202 269.3)
-
Step 700
700
#3851C9
oklch(49.1% 0.188 269.2)
-
Step 800
800
#2E43A3
oklch(42.7% 0.157 269.2)
-
Step 900
900
#283A81
oklch(37.7% 0.122 269.1)
-
Step 950
950 (this color)
#101A42
oklch(23.6% 0.077 269.2)
#101A42 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) | #022043 | 0.022 |
| Deuteranopia (no green cones) | #001B41 | 0.019 |
| Tritanopia (no blue cones) | #00242B | 0.064 |
| Achromatopsia (no color) | #1D1D1D | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101A42
#101A42
oklch(23.6% 0.077 269.2)
- #271D00
#271D00
oklch(23.6% 0.048 90.5)
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 #101A42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.037
- Rich Black #0D1B2A ΔE 0.048
- Oxford Blue #1B263B ΔE 0.048
- Dark Indigo #1F0954 ΔE 0.053
- Dark #1B2431 ΔE 0.055
- Night Blue #040348 ΔE 0.062
- Jet #212529 ΔE 0.073
- Darkblue #030764 ΔE 0.074
Use #101A42 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.