#10335B
Closest named color: Prussian Blue (#1D3557). oklch(31.9% 0.082 254.2), rgb(16, 51, 91).
Aa
White text reads best on this color (12.75:1).
About this color
#10335B is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.082 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.017 away. White text reads best on it, at 12.75:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.64:1 |
| White text | 12.75:1 |
Values
| HEX | #10335B |
| RGB | rgb(16, 51, 91) |
| HSL | hsl(212, 70%, 21%) |
| OKLCH | oklch(31.9% 0.082 254.2) |
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 #10335B | 12.75:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #10335B | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #10335B text on white | 12.75:1 | AAA | Lc 98.6 | Preferred for body text |
| #10335B text on black | 1.64:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DDEBFD
oklch(93.5% 0.029 254.7)
-
Step 200
200
#C1DCFD
oklch(88.5% 0.054 253.6)
-
Step 300
300
#95C4FE
oklch(80.9% 0.097 254.1)
-
Step 400
400
#56A3FE
oklch(70.7% 0.154 254)
-
Step 500
500
#0C88FD
oklch(63.1% 0.198 254.2)
-
Step 600
600
#0072D7
oklch(55.6% 0.177 254)
-
Step 700
700
#005FB6
oklch(49% 0.157 254.2)
-
Step 800
800
#004E97
oklch(42.8% 0.136 254.1)
-
Step 900
900
#00417F
oklch(37.8% 0.12 253.9)
-
Step 950
950 (this color)
#10335B
oklch(31.9% 0.082 254.2)
#10335B 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) | #20365D | 0.020 |
| Deuteranopia (no green cones) | #132F5A | 0.012 |
| Tritanopia (no blue cones) | #003C42 | 0.061 |
| Achromatopsia (no color) | #323232 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10335B
#10335B
oklch(31.9% 0.082 254.2)
- #472C00
#472C00
oklch(31.9% 0.068 73)
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 #10335B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.017
- Marine #042E60 ΔE 0.022
- Marine Blue #01386A ΔE 0.028
- Midnight Green #073B4C ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.044
- Space Cadet #2B2D42 ΔE 0.052
- Gunmetal #293241 ΔE 0.053
- Oxford Blue #1B263B ΔE 0.064
Use #10335B 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.