#16233A
Closest named color: Oxford Blue (#1B263B). oklch(25.7% 0.047 261.2), rgb(22, 35, 58).
Aa
White text reads best on this color (15.72:1).
About this color
#16233A is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.047 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.013 away. White text reads best on it, at 15.72:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.33:1 |
| White text | 15.72:1 |
Values
| HEX | #16233A |
| RGB | rgb(22, 35, 58) |
| HSL | hsl(218, 45%, 16%) |
| OKLCH | oklch(25.7% 0.047 261.2) |
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 #16233A | 15.72:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #16233A | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #16233A text on white | 15.72:1 | AAA | Lc 102.6 | Preferred for body text |
| #16233A 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
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEE
oklch(88.5% 0.03 260.7)
-
Step 300
300
#ADC2E6
oklch(81% 0.056 261.2)
-
Step 400
400
#81A1D9
oklch(70.7% 0.09 261.3)
-
Step 500
500
#6189CF
oklch(63.1% 0.115 261)
-
Step 600
600
#4872BC
oklch(55.7% 0.125 261)
-
Step 700
700
#3A5FA2
oklch(49.2% 0.116 261.3)
-
Step 800
800
#304E83
oklch(42.8% 0.095 261)
-
Step 900
900
#2A4169
oklch(37.7% 0.075 260.9)
-
Step 950
950 (this color)
#16233A
oklch(25.7% 0.047 261.2)
#16233A 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) | #1A253B | 0.010 |
| Deuteranopia (no green cones) | #16213A | 0.007 |
| Tritanopia (no blue cones) | #04282B | 0.043 |
| Achromatopsia (no color) | #232323 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #16233A
#16233A
oklch(25.7% 0.047 261.2)
- #2F2104
#2F2104
oklch(25.8% 0.048 82.3)
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 #16233A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.013
- Dark #1B2431 ΔE 0.020
- Jet #212529 ΔE 0.038
- Rich Black #0D1B2A ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.051
- Gunmetal #293241 ΔE 0.061
- Navy Blue #001146 ΔE 0.072
- Marine #042E60 ΔE 0.072
Use #16233A 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.