#224971
Closest named color: Twilight Blue (#0A437A). oklch(39.7% 0.081 251.1), rgb(34, 73, 113).
Aa
White text reads best on this color (9.29:1).
About this color
#224971 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.081 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.032 away. White text reads best on it, at 9.29:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.25:1 |
| White text | 9.29:1 |
Values
| HEX | #224971 |
| RGB | rgb(34, 73, 113) |
| HSL | hsl(210, 54%, 29%) |
| OKLCH | oklch(39.7% 0.081 251.1) |
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 #224971 | 9.29:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #224971 | 2.25:1 | Fails | Lc 12.7 | Not readable |
| #224971 text on white | 9.29:1 | AAA | Lc 91.2 | Preferred for body text |
| #224971 text on black | 2.25:1 | Fails | Lc -11.1 | 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 900.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#C9DBEF
oklch(88.4% 0.034 251)
-
Step 300
300
#A4C4E7
oklch(80.9% 0.061 250.9)
-
Step 400
400
#72A5DC
oklch(70.8% 0.098 251.1)
-
Step 500
500
#4B8DD2
oklch(63.1% 0.125 251.3)
-
Step 600
600
#2A76BF
oklch(55.6% 0.135 251)
-
Step 700
700
#1C63A5
oklch(49.2% 0.126 250.9)
-
Step 800
800
#1A5186
oklch(42.8% 0.105 251.1)
-
Step 900
900 (this color)
#224971
oklch(39.7% 0.081 251.1)
-
Step 950
950
#12283F
oklch(27.1% 0.051 251.2)
#224971 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) | #374B73 | 0.026 |
| Deuteranopia (no green cones) | #2C4470 | 0.017 |
| Tritanopia (no blue cones) | #005257 | 0.063 |
| Achromatopsia (no color) | #474747 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #224971
#224971
oklch(39.7% 0.081 251.1)
- #623E07
#623E07
oklch(39.7% 0.082 70.7)
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 #224971, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.032
- Light Navy #155084 ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.039
- Charcoal #264653 ΔE 0.050
- Cobalt #1E488F ΔE 0.051
- Dusk Blue #26538D ΔE 0.052
- Marine Blue #01386A ΔE 0.061
Use #224971 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.