#211D5A
Closest named color: Midnight Blue (#191970). oklch(27.8% 0.106 279.9), rgb(33, 29, 90).
Aa
White text reads best on this color (15.12:1).
About this color
#211D5A is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.106 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.042 away. White text reads best on it, at 15.12:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.38:1 |
| White text | 15.12:1 |
Values
| HEX | #211D5A |
| RGB | rgb(33, 29, 90) |
| HSL | hsl(244, 51%, 23%) |
| OKLCH | oklch(27.8% 0.106 279.9) |
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 #211D5A | 15.12:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #211D5A | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #211D5A text on white | 15.12:1 | AAA | Lc 101.7 | Preferred for body text |
| #211D5A text on black | 1.38:1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FF
oklch(93.6% 0.031 279.9)
-
Step 200
200
#D1D6FF
oklch(88.5% 0.057 279.7)
-
Step 300
300
#B4BAFF
oklch(80.9% 0.098 280.1)
-
Step 400
400
#8F93FF
oklch(70.7% 0.156 280)
-
Step 500
500
#7673FF
oklch(63.1% 0.202 279.9)
-
Step 600
600
#624CFF
oklch(55.6% 0.251 280)
-
Step 700
700
#532EEC
oklch(49.1% 0.259 279.9)
-
Step 800
800
#432ABE
oklch(42.7% 0.214 280)
-
Step 900
900
#372A96
oklch(37.7% 0.167 280.1)
-
Step 950
950 (this color)
#211D5A
oklch(27.8% 0.106 279.9)
#211D5A 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) | #00285C | 0.042 |
| Deuteranopia (no green cones) | #002459 | 0.039 |
| Tritanopia (no blue cones) | #002C38 | 0.090 |
| Achromatopsia (no color) | #262626 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #211D5A
#211D5A
oklch(27.8% 0.106 279.9)
- #2F2900
#2F2900
oklch(27.9% 0.058 100.9)
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 #211D5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.042
- Dark Indigo #1F0954 ΔE 0.044
- Marine #042E60 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.067
- Darkblue #030764 ΔE 0.068
- Prussian Blue #1D3557 ΔE 0.071
- Space Cadet #2B2D42 ΔE 0.073
- Dark Royal Blue #02066F ΔE 0.073
Use #211D5A 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.