#18293B
Closest named color: Oxford Blue (#1B263B). oklch(27.5% 0.041 250.8), rgb(24, 41, 59).
Aa
White text reads best on this color (14.79:1).
About this color
#18293B is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.041 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.011 away. White text reads best on it, at 14.79:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.41:1 |
| White text | 14.79:1 |
Values
| HEX | #18293B |
| RGB | rgb(24, 41, 59) |
| HSL | hsl(211, 42%, 16%) |
| OKLCH | oklch(27.5% 0.041 250.8) |
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 #18293B | 14.79:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #18293B | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #18293B text on white | 14.79:1 | AAA | Lc 101.6 | Preferred for body text |
| #18293B text on black | 1.41:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#AAC4DF
oklch(81% 0.048 249.4)
-
Step 400
400
#7DA4CF
oklch(70.6% 0.076 251.4)
-
Step 500
500
#5A8DC3
oklch(63% 0.099 250.9)
-
Step 600
600
#3F77AF
oklch(55.7% 0.106 250.3)
-
Step 700
700
#316397
oklch(49% 0.1 251.4)
-
Step 800
800
#29517A
oklch(42.6% 0.082 250.8)
-
Step 900
900
#264462
oklch(37.8% 0.063 249.8)
-
Step 950
950 (this color)
#18293B
oklch(27.5% 0.041 250.8)
#18293B 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) | #222A3C | 0.016 |
| Deuteranopia (no green cones) | #1D263B | 0.012 |
| Tritanopia (no blue cones) | #062D2F | 0.035 |
| Achromatopsia (no color) | #282828 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18293B
#18293B
oklch(27.5% 0.041 250.8)
- #342410
#342410
oklch(27.5% 0.04 70.9)
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 #18293B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.011
- Dark #1B2431 ΔE 0.022
- Jet #212529 ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.036
- Gunmetal #293241 ΔE 0.042
- Rich Black #0D1B2A ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.059
- Midnight Green #073B4C ΔE 0.061
Use #18293B 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.