#213774
Closest named color: Marine Blue (#01386A). oklch(35.6% 0.108 266.1), rgb(33, 55, 116).
Aa
White text reads best on this color (11.27:1).
About this color
#213774 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.108 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.031 away. White text reads best on it, at 11.27:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.86:1 |
| White text | 11.27:1 |
Values
| HEX | #213774 |
| RGB | rgb(33, 55, 116) |
| HSL | hsl(224, 56%, 29%) |
| OKLCH | oklch(35.6% 0.108 266.1) |
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 #213774 | 11.27:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #213774 | 1.86:1 | Fails | Lc 8.2 | Not readable |
| #213774 text on white | 11.27:1 | AAA | Lc 95.7 | Preferred for body text |
| #213774 text on black | 1.86:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CBD9F8
oklch(88.5% 0.045 266.2)
-
Step 300
300
#A8C0F6
oklch(80.9% 0.081 266)
-
Step 400
400
#7A9DF2
oklch(70.6% 0.131 266.1)
-
Step 500
500
#5A82ED
oklch(63% 0.167 266.3)
-
Step 600
600
#4169DC
oklch(55.6% 0.182 266.1)
-
Step 700
700
#3357BE
oklch(49.1% 0.167 265.9)
-
Step 800
800
#2B489A
oklch(42.8% 0.138 266)
-
Step 900
900 (this color)
#213774
oklch(35.6% 0.108 266.1)
-
Step 950
950
#162448
oklch(26.9% 0.07 265.9)
#213774 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) | #133F76 | 0.024 |
| Deuteranopia (no green cones) | #003773 | 0.025 |
| Tritanopia (no blue cones) | #004550 | 0.087 |
| Achromatopsia (no color) | #3B3B3B | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213774
#213774
oklch(35.6% 0.108 266.1)
- #4D3900
#4D3900
oklch(35.7% 0.073 86.5)
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 #213774, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.031
- Twilight Blue #0A437A ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.051
- Marine #042E60 ΔE 0.053
- Cobalt #1E488F ΔE 0.062
- Dark Grey Blue #29465B ΔE 0.071
- Dark Blue Grey #1F3B4D ΔE 0.073
- Dark Slate Blue #483D8B ΔE 0.073
Use #213774 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.