#28346F
Closest named color: Marine Blue (#01386A). oklch(34.9% 0.103 271.5), rgb(40, 52, 111).
Aa
White text reads best on this color (11.59:1).
About this color
#28346F is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.103 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.035 away. White text reads best on it, at 11.59:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.81:1 |
| White text | 11.59:1 |
Values
| HEX | #28346F |
| RGB | rgb(40, 52, 111) |
| HSL | hsl(230, 47%, 30%) |
| OKLCH | oklch(34.9% 0.103 271.5) |
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 #28346F | 11.59:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #28346F | 1.81:1 | Fails | Lc 7.4 | Not readable |
| #28346F text on white | 11.59:1 | AAA | Lc 96.4 | Preferred for body text |
| #28346F text on black | 1.81:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CFD8F6
oklch(88.5% 0.042 272.3)
-
Step 300
300
#AEBEF3
oklch(80.8% 0.077 271.5)
-
Step 400
400
#859BED
oklch(70.6% 0.123 271.5)
-
Step 500
500
#6880E8
oklch(63.1% 0.158 271.4)
-
Step 600
600
#5167D6
oklch(55.6% 0.171 271.3)
-
Step 700
700
#4255B9
oklch(49.1% 0.158 271.3)
-
Step 800
800
#364696
oklch(42.7% 0.132 271.3)
-
Step 900
900 (this color)
#28346F
oklch(34.9% 0.103 271.5)
-
Step 950
950
#1B2346
oklch(26.9% 0.066 271.6)
#28346F 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) | #143C71 | 0.028 |
| Deuteranopia (no green cones) | #04366E | 0.032 |
| Tritanopia (no blue cones) | #00424C | 0.089 |
| Achromatopsia (no color) | #393939 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28346F
#28346F
oklch(34.9% 0.103 271.5)
- #483800
#483800
oklch(34.8% 0.071 90.8)
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 #28346F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.047
- Marine #042E60 ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.069
- Dark Grey Blue #29465B ΔE 0.072
- Cobalt #1E488F ΔE 0.073
- Midnight Blue #191970 ΔE 0.074
Use #28346F 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.