#213859
Closest named color: Prussian Blue (#1D3557). oklch(33.9% 0.065 257.5), rgb(33, 56, 89).
Aa
White text reads best on this color (11.83:1).
About this color
#213859 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.065 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.012 away. White text reads best on it, at 11.83:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.77:1 |
| White text | 11.83:1 |
Values
| HEX | #213859 |
| RGB | rgb(33, 56, 89) |
| HSL | hsl(215, 46%, 24%) |
| OKLCH | oklch(33.9% 0.065 257.5) |
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 #213859 | 11.83:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #213859 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #213859 text on white | 11.83:1 | AAA | Lc 97.0 | Preferred for body text |
| #213859 text on black | 1.77:1 | 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
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#ADC2E1
oklch(80.8% 0.05 258)
-
Step 400
400
#82A2D2
oklch(70.6% 0.079 258.3)
-
Step 500
500
#628BC6
oklch(63.2% 0.1 257.5)
-
Step 600
600
#4974B2
oklch(55.6% 0.108 257.6)
-
Step 700
700
#3A6199
oklch(49.1% 0.101 257.5)
-
Step 800
800
#304F7C
oklch(42.6% 0.084 257.7)
-
Step 900
900 (this color)
#213859
oklch(33.9% 0.065 257.5)
-
Step 950
950
#19273B
oklch(27% 0.042 257.3)
#213859 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) | #2A3A5A | 0.014 |
| Deuteranopia (no green cones) | #233558 | 0.009 |
| Tritanopia (no blue cones) | #003F44 | 0.056 |
| Achromatopsia (no color) | #373737 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213859
#213859
oklch(33.9% 0.065 257.5)
- #4A3307
#4A3307
oklch(34% 0.065 78.4)
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 #213859, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.012
- Dark Blue Grey #1F3B4D ΔE 0.026
- Midnight Green #073B4C ΔE 0.036
- Marine Blue #01386A ΔE 0.037
- Gunmetal #293241 ΔE 0.043
- Marine #042E60 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.048
Use #213859 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.