#2245A3
Closest named color: Sapphire (#2138AB). oklch(42.5% 0.158 264.9), rgb(34, 69, 163).
Aa
White text reads best on this color (8.57:1).
About this color
#2245A3 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.158 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.033 away. White text reads best on it, at 8.57:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.44:1 |
| White text | 8.57:1 |
Values
| HEX | #2245A3 |
| RGB | rgb(34, 69, 163) |
| HSL | hsl(224, 65%, 39%) |
| OKLCH | oklch(42.5% 0.158 264.9) |
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 #2245A3 | 8.57:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #2245A3 | 2.44:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #2245A3 text on white | 8.57:1 | AAA | Lc 88.9 | Fine for body text |
| #2245A3 text on black | 2.44:1 | Fails | Lc -13.3 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FC
oklch(88.5% 0.051 265.9)
-
Step 300
300
#A3C0FD
oklch(80.9% 0.092 264.7)
-
Step 400
400
#739DFC
oklch(70.7% 0.147 264.9)
-
Step 500
500
#5081FA
oklch(63.2% 0.188 264.9)
-
Step 600
600
#3666E9
oklch(55.6% 0.205 265)
-
Step 700
700
#2954CA
oklch(49.1% 0.19 264.9)
-
Step 800
800 (this color)
#2245A3
oklch(42.5% 0.158 264.9)
-
Step 900
900
#203C82
oklch(37.8% 0.123 264.7)
-
Step 950
950
#13244C
oklch(27.1% 0.077 264.5)
#2245A3 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) | #0052A6 | 0.034 |
| Deuteranopia (no green cones) | #0046A1 | 0.019 |
| Tritanopia (no blue cones) | #005C6D | 0.122 |
| Achromatopsia (no color) | #4C4C4C | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2245A3
#2245A3
oklch(42.5% 0.158 264.9)
- #644A00
#644A00
oklch(42.5% 0.087 85.4)
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 #2245A3, closest first.
No curated palette has a color within ΔE 0.04 of #2245A3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.033
- Cobalt #1E488F ΔE 0.035
- Blueberry #464196 ΔE 0.048
- Dusk Blue #26538D ΔE 0.056
- Blue Blue #2242C7 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.062
- Light Navy #155084 ΔE 0.063
- Twilight Blue #0A437A ΔE 0.072
Use #2245A3 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.