#224A8F
Closest named color: Cobalt (#1E488F). oklch(42% 0.123 260.5), rgb(34, 74, 143).
Aa
White text reads best on this color (8.59:1).
About this color
#224A8F is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.123 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.007 away. White text reads best on it, at 8.59:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.44:1 |
| White text | 8.59:1 |
Values
| HEX | #224A8F |
| RGB | rgb(34, 74, 143) |
| HSL | hsl(218, 62%, 35%) |
| OKLCH | oklch(42% 0.123 260.5) |
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 #224A8F | 8.59:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #224A8F | 2.44:1 | Fails | Lc 14.8 | Not readable |
| #224A8F text on white | 8.59:1 | AAA | Lc 89.2 | Fine for body text |
| #224A8F text on black | 2.44:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CADAF4
oklch(88.4% 0.04 260.1)
-
Step 300
300
#A6C2F0
oklch(80.9% 0.072 260.3)
-
Step 400
400
#76A1E8
oklch(70.7% 0.115 260.1)
-
Step 500
500
#5387E1
oklch(63% 0.147 260.6)
-
Step 600
600
#386FCF
oklch(55.6% 0.16 260.7)
-
Step 700
700
#2A5CB3
oklch(49% 0.149 260.6)
-
Step 800
800 (this color)
#224A8F
oklch(42% 0.123 260.5)
-
Step 900
900
#224074
oklch(37.7% 0.096 260.6)
-
Step 950
950
#142644
oklch(27% 0.061 260.1)
#224A8F 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) | #255192 | 0.021 |
| Deuteranopia (no green cones) | #07478E | 0.020 |
| Tritanopia (no blue cones) | #005A65 | 0.097 |
| Achromatopsia (no color) | #4C4C4C | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #224A8F
#224A8F
oklch(42% 0.123 260.5)
- #654700
#654700
oklch(42% 0.087 81)
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 #224A8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.007
- Dusk Blue #26538D ΔE 0.028
- Light Navy #155084 ΔE 0.028
- Deep Sea Blue #015482 ΔE 0.041
- Twilight Blue #0A437A ΔE 0.045
- Blueberry #464196 ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.055
Use #224A8F 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.