#17233E
Closest named color: Oxford Blue (#1B263B). oklch(26% 0.054 264.8), rgb(23, 35, 62).
Aa
White text reads best on this color (15.59:1).
About this color
#17233E is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.054 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.015 away. White text reads best on it, at 15.59:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.34:1 |
| White text | 15.59:1 |
Values
| HEX | #17233E |
| RGB | rgb(23, 35, 62) |
| HSL | hsl(222, 46%, 17%) |
| OKLCH | oklch(26% 0.054 264.8) |
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 #17233E | 15.59:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #17233E | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #17233E text on white | 15.59:1 | AAA | Lc 102.5 | Preferred for body text |
| #17233E text on black | 1.34:1 | 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
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#ADC1EB
oklch(81% 0.064 265)
-
Step 400
400
#819FE1
oklch(70.6% 0.103 265.1)
-
Step 500
500
#6286D8
oklch(63% 0.131 265)
-
Step 600
600
#496EC5
oklch(55.5% 0.142 264.8)
-
Step 700
700
#3B5CAB
oklch(49.2% 0.132 264.9)
-
Step 800
800
#314B8A
oklch(42.6% 0.109 265.2)
-
Step 900
900
#2B3F6E
oklch(37.6% 0.085 265.2)
-
Step 950
950 (this color)
#17233E
oklch(26% 0.054 264.8)
#17233E 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) | #18263F | 0.010 |
| Deuteranopia (no green cones) | #13223D | 0.007 |
| Tritanopia (no blue cones) | #03292D | 0.048 |
| Achromatopsia (no color) | #242424 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17233E
#17233E
oklch(26% 0.054 264.8)
- #302100
#302100
oklch(25.9% 0.053 83.5)
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 #17233E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.015
- Dark #1B2431 ΔE 0.026
- Jet #212529 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.049
- Gunmetal #293241 ΔE 0.060
- Marine #042E60 ΔE 0.066
- Prussian Blue #1D3557 ΔE 0.069
Use #17233E 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.