#15335D
Closest named color: Prussian Blue (#1D3557). oklch(32.3% 0.083 257.4), rgb(21, 51, 93).
Aa
White text reads best on this color (12.62:1).
About this color
#15335D is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.083 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.016 away. White text reads best on it, at 12.62:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.66:1 |
| White text | 12.62:1 |
Values
| HEX | #15335D |
| RGB | rgb(21, 51, 93) |
| HSL | hsl(215, 63%, 22%) |
| OKLCH | oklch(32.3% 0.083 257.4) |
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 #15335D | 12.62:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #15335D | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #15335D text on white | 12.62:1 | AAA | Lc 98.4 | Preferred for body text |
| #15335D text on black | 1.66:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFD
oklch(93.6% 0.028 256.5)
-
Step 200
200
#C3DBFE
oklch(88.5% 0.055 257.7)
-
Step 300
300
#99C3FF
oklch(80.9% 0.097 257.3)
-
Step 400
400
#5FA1FF
oklch(70.7% 0.154 257.4)
-
Step 500
500
#2985FF
oklch(63.1% 0.2 257.5)
-
Step 600
600
#006DE5
oklch(55.6% 0.201 257.4)
-
Step 700
700
#005BC2
oklch(49% 0.177 257.5)
-
Step 800
800
#004AA1
oklch(42.6% 0.155 257.6)
-
Step 900
900
#043E85
oklch(37.6% 0.131 257.4)
-
Step 950
950 (this color)
#15335D
oklch(32.3% 0.083 257.4)
#15335D 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) | #1F375F | 0.018 |
| Deuteranopia (no green cones) | #13305C | 0.010 |
| Tritanopia (no blue cones) | #003D43 | 0.066 |
| Achromatopsia (no color) | #333333 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15335D
#15335D
oklch(32.3% 0.083 257.4)
- #462E00
#462E00
oklch(32.2% 0.067 77.5)
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 #15335D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.016
- Marine #042E60 ΔE 0.023
- Marine Blue #01386A ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.045
- Midnight Green #073B4C ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.053
- Gunmetal #293241 ΔE 0.054
- Twilight Blue #0A437A ΔE 0.064
Use #15335D 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.