#213EA1
Closest named color: Sapphire (#2138AB). oklch(40.9% 0.164 266.4), rgb(33, 62, 161).
Aa
White text reads best on this color (9.25:1).
About this color
#213EA1 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.164 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.021 away. White text reads best on it, at 9.25:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.26:1 |
| White text | 9.25:1 |
Values
| HEX | #213EA1 |
| RGB | rgb(33, 62, 161) |
| HSL | hsl(226, 66%, 38%) |
| OKLCH | oklch(40.9% 0.164 266.4) |
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 #213EA1 | 9.25:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #213EA1 | 2.26:1 | Fails | Lc 13.2 | Not readable |
| #213EA1 text on white | 9.25:1 | AAA | Lc 90.7 | Preferred for body text |
| #213EA1 text on black | 2.26:1 | Fails | Lc -11.6 | 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 800.
-
Step 50
50
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FD
oklch(88.5% 0.053 266.4)
-
Step 300
300
#A4BFFF
oklch(80.8% 0.096 266.6)
-
Step 400
400
#759CFF
oklch(70.8% 0.151 266.4)
-
Step 500
500
#527FFE
oklch(63.2% 0.195 266.2)
-
Step 600
600
#3A64ED
oklch(55.7% 0.212 266.4)
-
Step 700
700
#2D51CF
oklch(49.1% 0.199 266.5)
-
Step 800
800 (this color)
#213EA1
oklch(40.9% 0.164 266.4)
-
Step 900
900
#223A84
oklch(37.6% 0.128 266.6)
-
Step 950
950
#14234D
oklch(27% 0.08 266.3)
#213EA1 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) | #004DA4 | 0.038 |
| Deuteranopia (no green cones) | #00419F | 0.019 |
| Tritanopia (no blue cones) | #005769 | 0.127 |
| Achromatopsia (no color) | #474747 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #213EA1
#213EA1
oklch(40.9% 0.164 266.4)
- #5E4600
#5E4600
oklch(40.9% 0.084 86.2)
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 #213EA1, closest first.
No curated palette has a color within ΔE 0.04 of #213EA1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.021
- Cobalt #1E488F ΔE 0.040
- Blueberry #464196 ΔE 0.053
- Blue Blue #2242C7 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.063
- Dusk Blue #26538D ΔE 0.069
- Twilight Blue #0A437A ΔE 0.070
- Indigo Blue #3A18B1 ΔE 0.070
Use #213EA1 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.