#101F46
Closest named color: Oxford Blue (#1B263B). oklch(25.2% 0.076 265.4), rgb(16, 31, 70).
Aa
White text reads best on this color (16.07:1).
About this color
#101F46 is a dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.076 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.038 away. White text reads best on it, at 16.07:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.07:1 |
Values
| HEX | #101F46 |
| RGB | rgb(16, 31, 70) |
| HSL | hsl(223, 63%, 17%) |
| OKLCH | oklch(25.2% 0.076 265.4) |
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 #101F46 | 16.07:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #101F46 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #101F46 text on white | 16.07:1 | AAA | Lc 102.8 | Preferred for body text |
| #101F46 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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FB
oklch(88.4% 0.05 265.4)
-
Step 300
300
#A5C0FC
oklch(80.9% 0.09 265.7)
-
Step 400
400
#759DFA
oklch(70.7% 0.144 265.3)
-
Step 500
500
#5381F7
oklch(63.1% 0.183 265.4)
-
Step 600
600
#3967E6
oklch(55.6% 0.199 265.3)
-
Step 700
700
#2C54C8
oklch(49% 0.186 265.4)
-
Step 800
800
#2546A2
oklch(42.8% 0.154 265.3)
-
Step 900
900
#223C80
oklch(37.7% 0.119 265.3)
-
Step 950
950 (this color)
#101F46
oklch(25.2% 0.076 265.4)
#101F46 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) | #092447 | 0.016 |
| Deuteranopia (no green cones) | #001F45 | 0.017 |
| Tritanopia (no blue cones) | #00282F | 0.061 |
| Achromatopsia (no color) | #212121 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101F46
#101F46
oklch(25.2% 0.076 265.4)
- #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 #101F46, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.038
- Dark #1B2431 ΔE 0.049
- Navy Blue #001146 ΔE 0.049
- Rich Black #0D1B2A ΔE 0.054
- Dark Indigo #1F0954 ΔE 0.059
- Marine #042E60 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.067
- Jet #212529 ΔE 0.068
Use #101F46 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.