#222B3F
Closest named color: Space Cadet (#2B2D42). oklch(29% 0.039 265.4), rgb(34, 43, 63).
Aa
White text reads best on this color (14.13:1).
About this color
#222B3F is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.039 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.018 away. White text reads best on it, at 14.13:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.48:1 |
| White text | 14.13:1 |
Values
| HEX | #222B3F |
| RGB | rgb(34, 43, 63) |
| HSL | hsl(221, 30%, 19%) |
| OKLCH | oklch(29% 0.039 265.4) |
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 #222B3F | 14.13:1 | AAA | Lc -103.8 | Preferred for body text |
| Black text on #222B3F | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #222B3F text on white | 14.13:1 | AAA | Lc 100.8 | Preferred for body text |
| #222B3F text on black | 1.48:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1D9EB
oklch(88.5% 0.026 266.6)
-
Step 300
300
#B2C1DF
oklch(80.9% 0.046 264.3)
-
Step 400
400
#8AA0CF
oklch(70.6% 0.074 265.1)
-
Step 500
500
#6E88C3
oklch(63.1% 0.094 265.6)
-
Step 600
600
#5671AF
oklch(55.5% 0.102 265.4)
-
Step 700
700
#465F97
oklch(49.2% 0.095 264.9)
-
Step 800
800
#3A4D7A
oklch(42.6% 0.079 265.8)
-
Step 900
900
#324162
oklch(37.8% 0.06 265)
-
Step 950
950 (this color)
#222B3F
oklch(29% 0.039 265.4)
#222B3F 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) | #242D40 | 0.008 |
| Deuteranopia (no green cones) | #212A3F | 0.004 |
| Tritanopia (no blue cones) | #182F32 | 0.035 |
| Achromatopsia (no color) | #2B2B2B | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #222B3F
#222B3F
oklch(29% 0.039 265.4)
- #342A13
#342A13
oklch(29% 0.04 86.4)
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 #222B3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.018
- Oxford Blue #1B263B ΔE 0.021
- Gunmetal #293241 ΔE 0.027
- Dark #1B2431 ΔE 0.035
- Jet #212529 ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.053
- Midnight Green #073B4C ΔE 0.054
Use #222B3F 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.