#21419D
Closest named color: Cobalt (#1E488F). oklch(41.1% 0.155 265.4), rgb(33, 65, 157).
Aa
White text reads best on this color (9.10:1).
About this color
#21419D is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.155 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.031 away. White text reads best on it, at 9.10:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.30:1 |
| White text | 9.10:1 |
Values
| HEX | #21419D |
| RGB | rgb(33, 65, 157) |
| HSL | hsl(225, 65%, 37%) |
| OKLCH | oklch(41.1% 0.155 265.4) |
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 #21419D | 9.10:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #21419D | 2.30:1 | Fails | Lc 13.6 | Not readable |
| #21419D text on white | 9.10:1 | AAA | Lc 90.4 | Preferred for body text |
| #21419D text on black | 2.30:1 | Fails | Lc -11.9 | 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
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FB
oklch(88.4% 0.05 265.4)
-
Step 300
300
#A5C0FC
oklch(80.9% 0.09 265.7)
-
Step 400
400
#759DFA
oklch(70.7% 0.144 265.3)
-
Step 500
500
#5281F8
oklch(63.1% 0.185 265.3)
-
Step 600
600
#3967E7
oklch(55.7% 0.201 265.3)
-
Step 700
700
#2C54C9
oklch(49.1% 0.188 265.5)
-
Step 800
800 (this color)
#21419D
oklch(41.1% 0.155 265.4)
-
Step 900
900
#223C81
oklch(37.8% 0.121 265.4)
-
Step 950
950
#14244B
oklch(27.1% 0.075 265)
#21419D 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) | #004EA0 | 0.034 |
| Deuteranopia (no green cones) | #00439B | 0.019 |
| Tritanopia (no blue cones) | #005868 | 0.121 |
| Achromatopsia (no color) | #484848 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21419D
#21419D
oklch(41.1% 0.155 265.4)
- #5F4600
#5F4600
oklch(41% 0.084 85.2)
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 #21419D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.031
- Sapphire #2138AB ΔE 0.031
- Blueberry #464196 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.058
- Dusk Blue #26538D ΔE 0.059
- Light Navy #155084 ΔE 0.062
- Twilight Blue #0A437A ΔE 0.062
- Blue Blue #2242C7 ΔE 0.068
Use #21419D 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.