#223451
Closest named color: Prussian Blue (#1D3557). oklch(32.4% 0.057 259.6), rgb(34, 52, 81).
Aa
White text reads best on this color (12.51:1).
About this color
#223451 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.057 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.011 away. White text reads best on it, at 12.51:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.67:1 |
| White text | 12.51:1 |
Values
| HEX | #223451 |
| RGB | rgb(34, 52, 81) |
| HSL | hsl(217, 41%, 23%) |
| OKLCH | oklch(32.4% 0.057 259.6) |
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 #223451 | 12.51:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #223451 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #223451 text on white | 12.51:1 | AAA | Lc 98.3 | Preferred for body text |
| #223451 text on black | 1.67:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE9
oklch(88.5% 0.023 258.4)
-
Step 300
300
#B1C2DD
oklch(81% 0.043 259.6)
-
Step 400
400
#87A2CC
oklch(70.7% 0.069 259.1)
-
Step 500
500
#6A8ABF
oklch(63.1% 0.088 260.2)
-
Step 600
600
#5174AB
oklch(55.7% 0.095 259.2)
-
Step 700
700
#426193
oklch(49.2% 0.089 259.6)
-
Step 800
800
#364F77
oklch(42.6% 0.074 259.5)
-
Step 900
900 (this color)
#223451
oklch(32.4% 0.057 259.6)
-
Step 950
950
#1C2738
oklch(27.1% 0.035 258.9)
#223451 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) | #293652 | 0.012 |
| Deuteranopia (no green cones) | #233250 | 0.006 |
| Tritanopia (no blue cones) | #093A3E | 0.051 |
| Achromatopsia (no color) | #343434 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #223451
#223451
oklch(32.4% 0.057 259.6)
- #43300C
#43300C
oklch(32.3% 0.057 79.8)
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 #223451, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.011
- Dark Blue Grey #1F3B4D ΔE 0.026
- Gunmetal #293241 ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.032
- Midnight Green #073B4C ΔE 0.034
- Marine #042E60 ΔE 0.046
- Marine Blue #01386A ΔE 0.048
- Onyx #343A40 ΔE 0.049
Use #223451 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.