#2243A6
Closest named color: Sapphire (#2138AB). oklch(42.4% 0.164 265.6), rgb(34, 67, 166).
Aa
White text reads best on this color (8.67:1).
About this color
#2243A6 is a dark, vivid blue. In OKLCH its lightness is 42%, 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 0.027 away. White text reads best on it, at 8.67:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.42:1 |
| White text | 8.67:1 |
Values
| HEX | #2243A6 |
| RGB | rgb(34, 67, 166) |
| HSL | hsl(225, 66%, 39%) |
| OKLCH | oklch(42.4% 0.164 265.6) |
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 #2243A6 | 8.67:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #2243A6 | 2.42:1 | Fails | Lc 14.8 | Not readable |
| #2243A6 text on white | 8.67:1 | AAA | Lc 89.2 | Fine for body text |
| #2243A6 text on black | 2.42:1 | Fails | Lc -13.1 | 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
#C8D9FD
oklch(88.4% 0.053 265.3)
-
Step 300
300
#A3C0FF
oklch(80.9% 0.095 265.2)
-
Step 400
400
#739CFF
oklch(70.7% 0.152 265.7)
-
Step 500
500
#507FFE
oklch(63.1% 0.196 265.7)
-
Step 600
600
#3664EE
oklch(55.6% 0.214 265.6)
-
Step 700
700
#2A52CF
oklch(49.2% 0.198 265.7)
-
Step 800
800 (this color)
#2243A6
oklch(42.4% 0.164 265.6)
-
Step 900
900
#203B84
oklch(37.7% 0.127 265.4)
-
Step 950
950
#13234D
oklch(26.9% 0.08 265.6)
#2243A6 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) | #0052A9 | 0.038 |
| Deuteranopia (no green cones) | #0045A4 | 0.019 |
| Tritanopia (no blue cones) | #005C6E | 0.127 |
| Achromatopsia (no color) | #4B4B4B | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2243A6
#2243A6
oklch(42.4% 0.164 265.6)
- #634A00
#634A00
oklch(42.4% 0.087 86.3)
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 #2243A6, closest first.
No curated palette has a color within ΔE 0.04 of #2243A6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.027
- Cobalt #1E488F ΔE 0.041
- Blueberry #464196 ΔE 0.051
- Blue Blue #2242C7 ΔE 0.053
- Dusk Blue #26538D ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.065
- Majorelle Blue #3F37C9 ΔE 0.067
- Light Navy #155084 ΔE 0.070
Use #2243A6 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.