#23375A
Closest named color: Prussian Blue (#1D3557). oklch(33.8% 0.067 261), rgb(35, 55, 90).
Aa
White text reads best on this color (11.89:1).
About this color
#23375A is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.067 and its hue 261°. 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 11.89:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.76:1 |
| White text | 11.89:1 |
Values
| HEX | #23375A |
| RGB | rgb(35, 55, 90) |
| HSL | hsl(218, 44%, 25%) |
| OKLCH | oklch(33.8% 0.067 261) |
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 #23375A | 11.89:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #23375A | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #23375A text on white | 11.89:1 | AAA | Lc 97.1 | Preferred for body text |
| #23375A text on black | 1.76:1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CFDAEC
oklch(88.5% 0.028 260.3)
-
Step 300
300
#AFC2E2
oklch(81% 0.05 260.9)
-
Step 400
400
#84A1D3
oklch(70.6% 0.081 261.1)
-
Step 500
500
#6589C8
oklch(63% 0.104 261.1)
-
Step 600
600
#4D72B4
oklch(55.5% 0.112 261.3)
-
Step 700
700
#3E609B
oklch(49.2% 0.103 260.8)
-
Step 800
800
#334E7E
oklch(42.6% 0.087 261.2)
-
Step 900
900 (this color)
#23375A
oklch(33.8% 0.067 261)
-
Step 950
950
#1A263B
oklch(26.8% 0.043 261.2)
#23375A 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) | #293A5B | 0.013 |
| Deuteranopia (no green cones) | #223559 | 0.007 |
| Tritanopia (no blue cones) | #003F44 | 0.060 |
| Achromatopsia (no color) | #373737 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23375A
#23375A
oklch(33.8% 0.067 261)
- #493304
#493304
oklch(33.8% 0.067 80.7)
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 #23375A, 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 0.030
- Marine Blue #01386A ΔE 0.037
- Midnight Green #073B4C ΔE 0.040
- Gunmetal #293241 ΔE 0.044
- Marine #042E60 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.050
Use #23375A 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.