#213763
Closest named color: Prussian Blue (#1D3557). oklch(34.3% 0.082 262.8), rgb(33, 55, 99).
Aa
White text reads best on this color (11.72:1).
About this color
#213763 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.082 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.022 away. White text reads best on it, at 11.72:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.79:1 |
| White text | 11.72:1 |
Values
| HEX | #213763 |
| RGB | rgb(33, 55, 99) |
| HSL | hsl(220, 50%, 26%) |
| OKLCH | oklch(34.3% 0.082 262.8) |
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 #213763 | 11.72:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #213763 | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #213763 text on white | 11.72:1 | AAA | Lc 96.7 | Preferred for body text |
| #213763 text on black | 1.79:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#ACC1E9
oklch(80.9% 0.061 263.2)
-
Step 400
400
#80A0DF
oklch(70.7% 0.1 263.4)
-
Step 500
500
#6088D5
oklch(63.2% 0.125 262.5)
-
Step 600
600
#4770C3
oklch(55.6% 0.137 262.9)
-
Step 700
700
#385DA8
oklch(49% 0.128 262.8)
-
Step 800
800
#2F4C88
oklch(42.6% 0.106 263.2)
-
Step 900
900 (this color)
#213763
oklch(34.3% 0.082 262.8)
-
Step 950
950
#192640
oklch(27.1% 0.052 263.2)
#213763 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) | #233B65 | 0.013 |
| Deuteranopia (no green cones) | #1A3562 | 0.011 |
| Tritanopia (no blue cones) | #004148 | 0.069 |
| Achromatopsia (no color) | #383838 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213763
#213763
oklch(34.3% 0.082 262.8)
- #4A3500
#4A3500
oklch(34.4% 0.071 84)
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 #213763, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.022
- Marine Blue #01386A ΔE 0.026
- Marine #042E60 ΔE 0.041
- Dark Blue Grey #1F3B4D ΔE 0.044
- Twilight Blue #0A437A ΔE 0.049
- Midnight Green #073B4C ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.055
- Gunmetal #293241 ΔE 0.059
Use #213763 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.