#213861
Closest named color: Prussian Blue (#1D3557). oklch(34.4% 0.078 261.1), rgb(33, 56, 97).
Aa
White text reads best on this color (11.64:1).
About this color
#213861 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.078 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.020 away. White text reads best on it, at 11.64:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.80:1 |
| White text | 11.64:1 |
Values
| HEX | #213861 |
| RGB | rgb(33, 56, 97) |
| HSL | hsl(218, 49%, 25%) |
| OKLCH | oklch(34.4% 0.078 261.1) |
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 #213861 | 11.64:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #213861 | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #213861 text on white | 11.64:1 | AAA | Lc 96.6 | Preferred for body text |
| #213861 text on black | 1.80:1 | 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
#CDDAEF
oklch(88.5% 0.032 260)
-
Step 300
300
#ACC2E7
oklch(81% 0.058 260.8)
-
Step 400
400
#80A1DB
oklch(70.7% 0.093 261.4)
-
Step 500
500
#6089D1
oklch(63.2% 0.118 261.1)
-
Step 600
600
#4671BE
oklch(55.5% 0.129 261.2)
-
Step 700
700
#385FA4
oklch(49.2% 0.119 261)
-
Step 800
800
#2E4D85
oklch(42.6% 0.1 261.3)
-
Step 900
900 (this color)
#213861
oklch(34.4% 0.078 261.1)
-
Step 950
950
#18263E
oklch(26.9% 0.049 260.7)
#213861 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) | #263C63 | 0.015 |
| Deuteranopia (no green cones) | #1D3660 | 0.008 |
| Tritanopia (no blue cones) | #004147 | 0.066 |
| Achromatopsia (no color) | #383838 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213861
#213861
oklch(34.4% 0.078 261.1)
- #4C3400
#4C3400
oklch(34.4% 0.071 80.2)
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 #213861, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.020
- Marine Blue #01386A ΔE 0.028
- Dark Blue Grey #1F3B4D ΔE 0.040
- Marine #042E60 ΔE 0.044
- Midnight Green #073B4C ΔE 0.048
- Twilight Blue #0A437A ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.051
- Gunmetal #293241 ΔE 0.056
Use #213861 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.