#3351A8
Closest named color: Dusk Blue (#26538D). oklch(46.2% 0.144 266.4), rgb(51, 81, 168).
Aa
White text reads best on this color (7.28:1).
About this color
#3351A8 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.144 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.048 away. White text reads best on it, at 7.28:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.88:1 |
| White text | 7.28:1 |
Values
| HEX | #3351A8 |
| RGB | rgb(51, 81, 168) |
| HSL | hsl(225, 53%, 43%) |
| OKLCH | oklch(46.2% 0.144 266.4) |
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 #3351A8 | 7.28:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #3351A8 | 2.88:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #3351A8 text on white | 7.28:1 | AAA | Lc 84.9 | Fine for body text |
| #3351A8 text on black | 2.88:1 | Fails | Lc -17.1 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CDD9F4
oklch(88.5% 0.039 266.5)
-
Step 300
300
#ACC0EF
oklch(80.9% 0.07 266.8)
-
Step 400
400
#809EE7
oklch(70.6% 0.113 266.5)
-
Step 500
500
#6184DF
oklch(63% 0.143 266.5)
-
Step 600
600
#496CCD
oklch(55.6% 0.155 266.5)
-
Step 700
700 (this color)
#3351A8
oklch(46.2% 0.144 266.4)
-
Step 800
800
#304A90
oklch(42.7% 0.12 266.1)
-
Step 900
900
#2B3E73
oklch(37.7% 0.094 267)
-
Step 950
950
#192543
oklch(27% 0.058 266.1)
#3351A8 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) | #1C5CAB | 0.031 |
| Deuteranopia (no green cones) | #0051A6 | 0.032 |
| Tritanopia (no blue cones) | #006674 | 0.119 |
| Achromatopsia (no color) | #565656 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3351A8
#3351A8
oklch(46.2% 0.144 266.4)
- #705400
#705400
oklch(46.2% 0.095 86.2)
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 #3351A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.050
- Blueberry #464196 ΔE 0.051
- Cobalt #1E488F ΔE 0.053
- Twilight #4E518B ΔE 0.057
- Dusky Blue #475F94 ΔE 0.061
- Light Navy Blue #2E5A88 ΔE 0.062
- Blue Blue #2242C7 ΔE 0.065
Use #3351A8 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.