#101E49
Closest named color: Oxford Blue (#1B263B). oklch(25.2% 0.082 266.8), rgb(16, 30, 73).
Aa
White text reads best on this color (16.10:1).
About this color
#101E49 is a dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.082 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.044 away. White text reads best on it, at 16.10:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.10:1 |
Values
| HEX | #101E49 |
| RGB | rgb(16, 30, 73) |
| HSL | hsl(225, 64%, 17%) |
| OKLCH | oklch(25.2% 0.082 266.8) |
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 #101E49 | 16.10:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #101E49 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #101E49 text on white | 16.10:1 | AAA | Lc 102.8 | Preferred for body text |
| #101E49 text on black | 1.30:1 | 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
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C9D9FE
oklch(88.5% 0.054 266.8)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#759BFF
oklch(70.6% 0.153 266.8)
-
Step 500
500
#537EFF
oklch(63.1% 0.197 266.8)
-
Step 600
600
#3A62F0
oklch(55.5% 0.218 266.9)
-
Step 700
700
#2D50D1
oklch(49.1% 0.202 266.7)
-
Step 800
800
#2643A9
oklch(42.8% 0.167 266.8)
-
Step 900
900
#223A86
oklch(37.8% 0.131 266.7)
-
Step 950
950 (this color)
#101E49
oklch(25.2% 0.082 266.8)
#101E49 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) | #03244B | 0.020 |
| Deuteranopia (no green cones) | #001F48 | 0.016 |
| Tritanopia (no blue cones) | #002830 | 0.065 |
| Achromatopsia (no color) | #212121 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101E49
#101E49
oklch(25.2% 0.082 266.8)
- #2D2000
#2D2000
oklch(25.2% 0.052 86.4)
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 #101E49, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.044
- Navy Blue #001146 ΔE 0.046
- Dark Indigo #1F0954 ΔE 0.053
- Dark #1B2431 ΔE 0.055
- Rich Black #0D1B2A ΔE 0.060
- Marine #042E60 ΔE 0.060
- Darkblue #030764 ΔE 0.070
- Space Cadet #2B2D42 ΔE 0.070
Use #101E49 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.