#101D58
Closest named color: Midnight Blue (#191970). oklch(26.4% 0.107 268.3), rgb(16, 29, 88).
Aa
White text reads best on this color (15.68:1).
About this color
#101D58 is a dark, moderately saturated blue. In OKLCH its lightness is 26%, its chroma 0.107 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.045 away. White text reads best on it, at 15.68:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.33:1 |
| White text | 15.68:1 |
Values
| HEX | #101D58 |
| RGB | rgb(16, 29, 88) |
| HSL | hsl(229, 69%, 20%) |
| OKLCH | oklch(26.4% 0.107 268.3) |
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 #101D58 | 15.68:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #101D58 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #101D58 text on white | 15.68:1 | AAA | Lc 102.2 | Preferred for body text |
| #101D58 text on black | 1.33:1 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#799AFF
oklch(70.6% 0.153 268.6)
-
Step 500
500
#587DFF
oklch(63.1% 0.197 268.3)
-
Step 600
600
#3B5BFF
oklch(55.6% 0.244 268.3)
-
Step 700
700
#2B3CF2
oklch(49.1% 0.263 268.3)
-
Step 800
800
#2335C3
oklch(42.8% 0.217 268.3)
-
Step 900
900
#1E3299
oklch(37.7% 0.168 268.1)
-
Step 950
950 (this color)
#101D58
oklch(26.4% 0.107 268.3)
#101D58 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) | #00275A | 0.028 |
| Deuteranopia (no green cones) | #002057 | 0.016 |
| Tritanopia (no blue cones) | #002C37 | 0.084 |
| Achromatopsia (no color) | #232323 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101D58
#101D58
oklch(26.4% 0.107 268.3)
- #302300
#302300
oklch(26.4% 0.054 87.8)
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 #101D58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.045
- Dark Indigo #1F0954 ΔE 0.046
- Marine #042E60 ΔE 0.049
- Darkblue #030764 ΔE 0.051
- Navy Blue #001146 ΔE 0.055
- Dark Royal Blue #02066F ΔE 0.059
- Deep Blue #040273 ΔE 0.065
- Oxford Blue #1B263B ΔE 0.066
Use #101D58 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.