#213765
Closest named color: Marine Blue (#01386A). oklch(34.4% 0.085 263.3), rgb(33, 55, 101).
Aa
White text reads best on this color (11.67:1).
About this color
#213765 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.085 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.025 away. White text reads best on it, at 11.67:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.79:1 |
| White text | 11.67:1 |
Values
| HEX | #213765 |
| RGB | rgb(33, 55, 101) |
| HSL | hsl(221, 51%, 26%) |
| OKLCH | oklch(34.4% 0.085 263.3) |
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 #213765 | 11.67:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #213765 | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #213765 text on white | 11.67:1 | AAA | Lc 96.6 | Preferred for body text |
| #213765 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
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#ABC1EB
oklch(80.9% 0.064 263.3)
-
Step 400
400
#7FA0E1
oklch(70.7% 0.103 263.3)
-
Step 500
500
#5F87D8
oklch(63.1% 0.13 263.2)
-
Step 600
600
#466FC6
oklch(55.6% 0.143 263.5)
-
Step 700
700
#385DAB
oklch(49.2% 0.132 263.3)
-
Step 800
800
#2E4C8A
oklch(42.7% 0.109 263.1)
-
Step 900
900 (this color)
#213765
oklch(34.4% 0.085 263.3)
-
Step 950
950
#182641
oklch(27.1% 0.054 262.5)
#213765 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) | #223C67 | 0.015 |
| Deuteranopia (no green cones) | #173564 | 0.013 |
| Tritanopia (no blue cones) | #004149 | 0.070 |
| Achromatopsia (no color) | #383838 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213765
#213765
oklch(34.4% 0.085 263.3)
- #4B3500
#4B3500
oklch(34.5% 0.071 82.8)
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 #213765, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.025
- Prussian Blue #1D3557 ΔE 0.026
- Marine #042E60 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.048
- Midnight Green #073B4C ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.057
- Gunmetal #293241 ΔE 0.063
Use #213765 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.