#22357B
Closest named color: Marine Blue (#01386A). oklch(35.8% 0.121 268.2), rgb(34, 53, 123).
Aa
White text reads best on this color (11.27:1).
About this color
#22357B is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.121 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.041 away. White text reads best on it, at 11.27:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.86:1 |
| White text | 11.27:1 |
Values
| HEX | #22357B |
| RGB | rgb(34, 53, 123) |
| HSL | hsl(227, 57%, 31%) |
| OKLCH | oklch(35.8% 0.121 268.2) |
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 #22357B | 11.27:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #22357B | 1.86:1 | Fails | Lc 8.3 | Not readable |
| #22357B text on white | 11.27:1 | AAA | Lc 95.6 | Preferred for body text |
| #22357B text on black | 1.86:1 | 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 900.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CBD9FC
oklch(88.6% 0.051 268.1)
-
Step 300
300
#A7BFFC
oklch(80.9% 0.091 267.7)
-
Step 400
400
#7A9BFB
oklch(70.7% 0.146 268.2)
-
Step 500
500
#5A7FF9
oklch(63.2% 0.186 268)
-
Step 600
600
#4364E8
oklch(55.7% 0.203 268.3)
-
Step 700
700
#3552C9
oklch(49.1% 0.188 268.1)
-
Step 800
800
#2C44A3
oklch(42.8% 0.156 268.2)
-
Step 900
900 (this color)
#22357B
oklch(35.8% 0.121 268.2)
-
Step 950
950
#17234C
oklch(27.1% 0.077 268.6)
#22357B 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) | #003F7D | 0.032 |
| Deuteranopia (no green cones) | #00377A | 0.025 |
| Tritanopia (no blue cones) | #004652 | 0.099 |
| Achromatopsia (no color) | #3B3B3B | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #22357B
#22357B
oklch(35.8% 0.121 268.2)
- #4C3A00
#4C3A00
oklch(35.8% 0.073 89.1)
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 #22357B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.041
- Twilight Blue #0A437A ΔE 0.041
- Cobalt #1E488F ΔE 0.059
- Marine #042E60 ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.069
- Midnight Blue #191970 ΔE 0.074
- Light Navy #155084 ΔE 0.076
Use #22357B 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.