#213257
Closest named color: Prussian Blue (#1D3557). oklch(32.2% 0.07 264.2), rgb(33, 50, 87).
Aa
White text reads best on this color (12.66:1).
About this color
#213257 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.070 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.010 away. White text reads best on it, at 12.66:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.65:1 |
| White text | 12.66:1 |
Values
| HEX | #213257 |
| RGB | rgb(33, 50, 87) |
| HSL | hsl(221, 45%, 24%) |
| OKLCH | oklch(32.2% 0.07 264.2) |
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 #213257 | 12.66:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #213257 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #213257 text on white | 12.66:1 | AAA | Lc 98.6 | Preferred for body text |
| #213257 text on black | 1.65:1 | 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 950.
-
Step 50
50
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CADAF8
oklch(88.6% 0.045 263.1)
-
Step 300
300
#A6C1F7
oklch(81% 0.082 264)
-
Step 400
400
#769EF3
oklch(70.6% 0.133 264.2)
-
Step 500
500
#5483EF
oklch(63.1% 0.17 264.4)
-
Step 600
600
#3A6ADD
oklch(55.6% 0.184 264.2)
-
Step 700
700
#2D58C0
oklch(49.2% 0.17 264.1)
-
Step 800
800
#26489B
oklch(42.6% 0.141 264.4)
-
Step 900
900
#233D7B
oklch(37.6% 0.11 264.6)
-
Step 950
950 (this color)
#213257
oklch(32.2% 0.07 264.2)
#213257 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) | #223658 | 0.013 |
| Deuteranopia (no green cones) | #1C3156 | 0.008 |
| Tritanopia (no blue cones) | #003A40 | 0.062 |
| Achromatopsia (no color) | #333333 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213257
#213257
oklch(32.2% 0.07 264.2)
- #433000
#433000
oklch(32.2% 0.066 84.5)
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 #213257, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.010
- Marine #042E60 ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.039
- Marine Blue #01386A ΔE 0.040
- Gunmetal #293241 ΔE 0.041
- Midnight Green #073B4C ΔE 0.044
- Oxford Blue #1B263B ΔE 0.060
Use #213257 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.