#23345D
Closest named color: Prussian Blue (#1D3557). oklch(33.3% 0.076 265.5), rgb(35, 52, 93).
Aa
White text reads best on this color (12.20:1).
About this color
#23345D is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.076 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.014 away. White text reads best on it, at 12.20:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.72:1 |
| White text | 12.20:1 |
Values
| HEX | #23345D |
| RGB | rgb(35, 52, 93) |
| HSL | hsl(222, 45%, 25%) |
| OKLCH | oklch(33.3% 0.076 265.5) |
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 #23345D | 12.20:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #23345D | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #23345D text on white | 12.20:1 | AAA | Lc 97.7 | Preferred for body text |
| #23345D text on black | 1.72:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#AFC1E6
oklch(81% 0.056 264.7)
-
Step 400
400
#85A0DA
oklch(70.8% 0.091 264.9)
-
Step 500
500
#6787D0
oklch(63.1% 0.116 265.3)
-
Step 600
600
#4F6FBD
oklch(55.5% 0.127 265.6)
-
Step 700
700
#405DA3
oklch(49.1% 0.117 265.4)
-
Step 800
800
#354C84
oklch(42.7% 0.097 265.6)
-
Step 900
900 (this color)
#23345D
oklch(33.3% 0.076 265.5)
-
Step 950
950
#1B263E
oklch(27.1% 0.048 264.7)
#23345D 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) | #22385F | 0.012 |
| Deuteranopia (no green cones) | #1B335C | 0.011 |
| Tritanopia (no blue cones) | #003D44 | 0.067 |
| Achromatopsia (no color) | #353535 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23345D
#23345D
oklch(33.3% 0.076 265.5)
- #463300
#463300
oklch(33.4% 0.068 85.7)
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 #23345D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.014
- Marine Blue #01386A ΔE 0.033
- Marine #042E60 ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.041
- Midnight Green #073B4C ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.049
- Gunmetal #293241 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.060
Use #23345D 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.