#212A4E
Closest named color: Space Cadet (#2B2D42). oklch(29.7% 0.067 271.3), rgb(33, 42, 78).
Aa
White text reads best on this color (13.94:1).
About this color
#212A4E is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.067 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.031 away. White text reads best on it, at 13.94:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.50:1 |
| White text | 13.94:1 |
Values
| HEX | #212A4E |
| RGB | rgb(33, 42, 78) |
| HSL | hsl(228, 41%, 22%) |
| OKLCH | oklch(29.7% 0.067 271.3) |
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 #212A4E | 13.94:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #212A4E | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #212A4E text on white | 13.94:1 | AAA | Lc 100.5 | Preferred for body text |
| #212A4E text on black | 1.50:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#AEBEF4
oklch(80.8% 0.079 271.7)
-
Step 400
400
#849BEF
oklch(70.7% 0.126 271.3)
-
Step 500
500
#6780EA
oklch(63.2% 0.161 271.2)
-
Step 600
600
#5066D8
oklch(55.5% 0.176 271.3)
-
Step 700
700
#4154BB
oklch(49% 0.163 271.2)
-
Step 800
800
#364698
oklch(42.8% 0.135 271.3)
-
Step 900
900
#2E3B79
oklch(37.6% 0.106 271.5)
-
Step 950
950 (this color)
#212A4E
oklch(29.7% 0.067 271.3)
#212A4E 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) | #1B2E4F | 0.014 |
| Deuteranopia (no green cones) | #162A4D | 0.015 |
| Tritanopia (no blue cones) | #0C3238 | 0.059 |
| Achromatopsia (no color) | #2C2C2C | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #212A4E
#212A4E
oklch(29.7% 0.067 271.3)
- #382B00
#382B00
oklch(29.5% 0.06 90.9)
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 #212A4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.037
- Marine #042E60 ΔE 0.041
- Gunmetal #293241 ΔE 0.042
- Dark #1B2431 ΔE 0.056
- Dark Blue Grey #1F3B4D ΔE 0.056
- Midnight Green #073B4C ΔE 0.059
Use #212A4E 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.