#213898
Closest named color: Sapphire (#2138AB). oklch(38.9% 0.159 267.7), rgb(33, 56, 152).
Aa
White text reads best on this color (10.07:1).
About this color
#213898 is a dark, vivid blue. In OKLCH its lightness is 39%, its chroma 0.159 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.031 away. White text reads best on it, at 10.07:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.08:1 |
| White text | 10.07:1 |
Values
| HEX | #213898 |
| RGB | rgb(33, 56, 152) |
| HSL | hsl(228, 64%, 36%) |
| OKLCH | oklch(38.9% 0.159 267.7) |
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 #213898 | 10.07:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #213898 | 2.08:1 | Fails | Lc 11.2 | Not readable |
| #213898 text on white | 10.07:1 | AAA | Lc 92.8 | Preferred for body text |
| #213898 text on black | 2.08:1 | Fails | Lc -9.7 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#779BFF
oklch(70.7% 0.152 267.5)
-
Step 500
500
#567DFF
oklch(63% 0.198 267.8)
-
Step 600
600
#385BFF
oklch(55.5% 0.245 267.7)
-
Step 700
700
#2A43E9
oklch(49.1% 0.247 267.8)
-
Step 800
800
#2239BC
oklch(42.6% 0.205 267.7)
-
Step 900
900 (this color)
#213898
oklch(38.9% 0.159 267.7)
-
Step 950
950
#112057
oklch(27% 0.101 267.4)
#213898 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) | #00489B | 0.041 |
| Deuteranopia (no green cones) | #003C96 | 0.021 |
| Tritanopia (no blue cones) | #005162 | 0.125 |
| Achromatopsia (no color) | #424242 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213898
#213898
oklch(38.9% 0.159 267.7)
- #574100
#574100
oklch(38.9% 0.079 86.8)
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 #213898, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.031
- Cobalt #1E488F ΔE 0.045
- Blueberry #464196 ΔE 0.058
- Twilight Blue #0A437A ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.062
- Indigo Blue #3A18B1 ΔE 0.068
- Royal #0C1793 ΔE 0.074
- Light Navy #155084 ΔE 0.076
Use #213898 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.