#18274B
Closest named color: Oxford Blue (#1B263B). oklch(28.1% 0.069 265.2), rgb(24, 39, 75).
Aa
White text reads best on this color (14.67:1).
About this color
#18274B is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.069 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.029 away. White text reads best on it, at 14.67:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.43:1 |
| White text | 14.67:1 |
Values
| HEX | #18274B |
| RGB | rgb(24, 39, 75) |
| HSL | hsl(222, 52%, 19%) |
| OKLCH | oklch(28.1% 0.069 265.2) |
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 #18274B | 14.67:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #18274B | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #18274B text on white | 14.67:1 | AAA | Lc 101.4 | Preferred for body text |
| #18274B text on black | 1.43:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CBD9F8
oklch(88.5% 0.045 266.2)
-
Step 300
300
#A7C0F7
oklch(80.9% 0.083 265.6)
-
Step 400
400
#789EF3
oklch(70.8% 0.132 264.9)
-
Step 500
500
#5783EE
oklch(63.1% 0.168 265.1)
-
Step 600
600
#3E69DD
oklch(55.6% 0.184 265.4)
-
Step 700
700
#3057BF
oklch(49% 0.169 265.1)
-
Step 800
800
#28489B
oklch(42.7% 0.141 265)
-
Step 900
900
#243D7B
oklch(37.6% 0.11 265)
-
Step 950
950 (this color)
#18274B
oklch(28.1% 0.069 265.2)
#18274B 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) | #172B4C | 0.013 |
| Deuteranopia (no green cones) | #0F264A | 0.012 |
| Tritanopia (no blue cones) | #002F35 | 0.059 |
| Achromatopsia (no color) | #282828 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18274B
#18274B
oklch(28.1% 0.069 265.2)
- #362600
#362600
oklch(28% 0.057 84.4)
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 #18274B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.042
- Marine #042E60 ΔE 0.042
- Dark #1B2431 ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.048
- Gunmetal #293241 ΔE 0.053
- Jet #212529 ΔE 0.063
- Midnight Green #073B4C ΔE 0.066
Use #18274B 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.