#243158
Closest named color: Prussian Blue (#1D3557). oklch(32.3% 0.072 268.3), rgb(36, 49, 88).
Aa
White text reads best on this color (12.68:1).
About this color
#243158 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.072 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.015 away. White text reads best on it, at 12.68:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.65:1 |
| White text | 12.68:1 |
Values
| HEX | #243158 |
| RGB | rgb(36, 49, 88) |
| HSL | hsl(225, 42%, 24%) |
| OKLCH | oklch(32.3% 0.072 268.3) |
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 #243158 | 12.68:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #243158 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #243158 text on white | 12.68:1 | AAA | Lc 98.6 | Preferred for body text |
| #243158 text on black | 1.65:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9F9
oklch(88.6% 0.046 267.9)
-
Step 300
300
#A9BFF8
oklch(80.8% 0.085 268.1)
-
Step 400
400
#7D9CF5
oklch(70.7% 0.135 268.3)
-
Step 500
500
#5D80F1
oklch(63% 0.174 268.2)
-
Step 600
600
#4666E0
oklch(55.6% 0.189 268.5)
-
Step 700
700
#3854C2
oklch(49.1% 0.175 268.4)
-
Step 800
800
#2E469D
oklch(42.8% 0.144 268.1)
-
Step 900
900
#283C7D
oklch(37.8% 0.113 267.8)
-
Step 950
950 (this color)
#243158
oklch(32.3% 0.072 268.3)
#243158 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) | #21355A | 0.012 |
| Deuteranopia (no green cones) | #1B3157 | 0.012 |
| Tritanopia (no blue cones) | #083940 | 0.063 |
| Achromatopsia (no color) | #333333 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #243158
#243158
oklch(32.3% 0.072 268.3)
- #413100
#413100
oklch(32.2% 0.066 88.7)
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 #243158, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.015
- Marine #042E60 ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.040
- Marine Blue #01386A ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.042
- Gunmetal #293241 ΔE 0.043
- Midnight Green #073B4C ΔE 0.049
- Oxford Blue #1B263B ΔE 0.061
Use #243158 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.