#101C58
Closest named color: Dark Indigo (#1F0954). oklch(26.2% 0.109 268.7), rgb(16, 28, 88).
Aa
White text reads best on this color (15.80:1).
About this color
#101C58 is a dark, moderately saturated blue. In OKLCH its lightness is 26%, its chroma 0.109 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.044 away. White text reads best on it, at 15.80:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.32:1 |
| White text | 15.80:1 |
Values
| HEX | #101C58 |
| RGB | rgb(16, 28, 88) |
| HSL | hsl(230, 69%, 20%) |
| OKLCH | oklch(26.2% 0.109 268.7) |
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 #101C58 | 15.80:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #101C58 | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #101C58 text on white | 15.80:1 | AAA | Lc 102.4 | Preferred for body text |
| #101C58 text on black | 1.32:1 | 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
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A7BFFF
oklch(81% 0.095 268.4)
-
Step 400
400
#799AFF
oklch(70.6% 0.153 268.6)
-
Step 500
500
#597DFF
oklch(63.2% 0.197 268.6)
-
Step 600
600
#3D5AFF
oklch(55.6% 0.245 268.8)
-
Step 700
700
#2D3AF4
oklch(49.1% 0.267 268.7)
-
Step 800
800
#2433C5
oklch(42.7% 0.221 268.7)
-
Step 900
900
#1F319B
oklch(37.8% 0.172 268.6)
-
Step 950
950 (this color)
#101C58
oklch(26.2% 0.109 268.7)
#101C58 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) | #00265A | 0.028 |
| Deuteranopia (no green cones) | #001F57 | 0.016 |
| Tritanopia (no blue cones) | #002C37 | 0.086 |
| Achromatopsia (no color) | #232323 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101C58
#101C58
oklch(26.2% 0.109 268.7)
- #2F2300
#2F2300
oklch(26.3% 0.054 89.5)
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 #101C58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.044
- Midnight Blue #191970 ΔE 0.045
- Darkblue #030764 ΔE 0.049
- Marine #042E60 ΔE 0.051
- Navy Blue #001146 ΔE 0.053
- Dark Royal Blue #02066F ΔE 0.057
- Deep Blue #040273 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.067
Use #101C58 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.