#16203B
Closest named color: Oxford Blue (#1B263B). oklch(24.9% 0.053 267.2), rgb(22, 32, 59).
Aa
White text reads best on this color (16.10:1).
About this color
#16203B is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.053 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.023 away. White text reads best on it, at 16.10:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.10:1 |
Values
| HEX | #16203B |
| RGB | rgb(22, 32, 59) |
| HSL | hsl(224, 46%, 16%) |
| OKLCH | oklch(24.9% 0.053 267.2) |
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 #16203B | 16.10:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #16203B | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #16203B text on white | 16.10:1 | AAA | Lc 103.0 | Preferred for body text |
| #16203B 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F1
oklch(88.5% 0.035 267.6)
-
Step 300
300
#AEC0EA
oklch(80.8% 0.063 266.8)
-
Step 400
400
#849FE0
oklch(70.8% 0.1 266.6)
-
Step 500
500
#6685D8
oklch(63.1% 0.13 267.2)
-
Step 600
600
#4E6DC5
oklch(55.5% 0.141 267.1)
-
Step 700
700
#405BAA
oklch(49.1% 0.13 267.3)
-
Step 800
800
#344B8A
oklch(42.8% 0.108 266.8)
-
Step 900
900
#2D3F6E
oklch(37.7% 0.084 266.6)
-
Step 950
950 (this color)
#16203B
oklch(24.9% 0.053 267.2)
#16203B 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) | #15233C | 0.010 |
| Deuteranopia (no green cones) | #111F3A | 0.008 |
| Tritanopia (no blue cones) | #04262A | 0.048 |
| Achromatopsia (no color) | #212121 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #16203B
#16203B
oklch(24.9% 0.053 267.2)
- #2C1F00
#2C1F00
oklch(24.8% 0.051 85.9)
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 #16203B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.023
- Dark #1B2431 ΔE 0.028
- Rich Black #0D1B2A ΔE 0.038
- Jet #212529 ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.058
- Navy Blue #001146 ΔE 0.063
- Gunmetal #293241 ΔE 0.070
- Dark Indigo #1F0954 ΔE 0.074
Use #16203B 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.