#213558
Closest named color: Prussian Blue (#1D3557). oklch(33.1% 0.067 260.9), rgb(33, 53, 88).
Aa
White text reads best on this color (12.24:1).
About this color
#213558 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.067 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.005 away. White text reads best on it, at 12.24:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.71:1 |
| White text | 12.24:1 |
Values
| HEX | #213558 |
| RGB | rgb(33, 53, 88) |
| HSL | hsl(218, 45%, 24%) |
| OKLCH | oklch(33.1% 0.067 260.9) |
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 #213558 | 12.24:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #213558 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #213558 text on white | 12.24:1 | AAA | Lc 97.8 | Preferred for body text |
| #213558 text on black | 1.71:1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CFDAEC
oklch(88.5% 0.028 260.3)
-
Step 300
300
#AEC2E2
oklch(81% 0.05 259.8)
-
Step 400
400
#84A1D4
oklch(70.6% 0.082 261.5)
-
Step 500
500
#6589C8
oklch(63% 0.104 261.1)
-
Step 600
600
#4C72B5
oklch(55.5% 0.113 261.1)
-
Step 700
700
#3D609C
oklch(49.2% 0.105 260.6)
-
Step 800
800
#334E7E
oklch(42.6% 0.087 261.2)
-
Step 900
900 (this color)
#213558
oklch(33.1% 0.067 260.9)
-
Step 950
950
#1A263B
oklch(26.8% 0.043 261.2)
#213558 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) | #263859 | 0.012 |
| Deuteranopia (no green cones) | #1F3357 | 0.007 |
| Tritanopia (no blue cones) | #003D42 | 0.060 |
| Achromatopsia (no color) | #353535 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213558
#213558
oklch(33.1% 0.067 260.9)
- #473101
#473101
oklch(33% 0.067 80.9)
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 #213558, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.005
- Dark Blue Grey #1F3B4D ΔE 0.031
- Marine Blue #01386A ΔE 0.037
- Midnight Green #073B4C ΔE 0.039
- Marine #042E60 ΔE 0.040
- Gunmetal #293241 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.043
- Onyx #343A40 ΔE 0.056
Use #213558 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.