#213653
Closest named color: Prussian Blue (#1D3557). oklch(33% 0.058 256.7), rgb(33, 54, 83).
Aa
White text reads best on this color (12.22:1).
About this color
#213653 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.058 and its hue 257°. 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 12.22:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.71:1 |
| White text | 12.22:1 |
Values
| HEX | #213653 |
| RGB | rgb(33, 54, 83) |
| HSL | hsl(215, 43%, 23%) |
| OKLCH | oklch(33% 0.058 256.7) |
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 #213653 | 12.22:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #213653 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #213653 text on white | 12.22:1 | AAA | Lc 97.8 | Preferred for body text |
| #213653 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#CFDAE9
oklch(88.5% 0.024 256.1)
-
Step 300
300
#AFC2DD
oklch(80.8% 0.044 257.1)
-
Step 400
400
#85A3CC
oklch(70.8% 0.069 256.3)
-
Step 500
500
#668BBF
oklch(63% 0.089 257)
-
Step 600
600
#4D75AC
oklch(55.7% 0.097 256.6)
-
Step 700
700
#3E6293
oklch(49.2% 0.089 256.4)
-
Step 800
800
#335078
oklch(42.8% 0.075 256.7)
-
Step 900
900 (this color)
#213653
oklch(33% 0.058 256.7)
-
Step 950
950
#1B2738
oklch(27% 0.036 257.1)
#213653 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) | #2A3854 | 0.015 |
| Deuteranopia (no green cones) | #243352 | 0.010 |
| Tritanopia (no blue cones) | #033C40 | 0.052 |
| Achromatopsia (no color) | #353535 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213653
#213653
oklch(33% 0.058 256.7)
- #46310D
#46310D
oklch(33% 0.059 77.3)
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 #213653, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.010
- Dark Blue Grey #1F3B4D ΔE 0.022
- Midnight Green #073B4C ΔE 0.031
- Gunmetal #293241 ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.037
- Marine Blue #01386A ΔE 0.045
- Marine #042E60 ΔE 0.047
- Onyx #343A40 ΔE 0.048
Use #213653 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.