#3359CB
Closest named color: Warm Blue (#4B57DB). oklch(50.5% 0.182 266), rgb(51, 89, 203).
Aa
White text reads best on this color (6.11:1).
About this color
#3359CB is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.182 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.037 away. White text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.43:1 |
| White text | 6.11:1 |
Values
| HEX | #3359CB |
| RGB | rgb(51, 89, 203) |
| HSL | hsl(225, 60%, 50%) |
| OKLCH | oklch(50.5% 0.182 266) |
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 #3359CB | 6.11:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #3359CB | 3.43:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #3359CB text on white | 6.11:1 | AA | Lc 80.0 | Fine for body text |
| #3359CB text on black | 3.43:1 | AA large text | Lc -21.8 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A6C0FB
oklch(81% 0.089 266)
-
Step 400
400
#779DF8
oklch(70.8% 0.14 265.8)
-
Step 500
500
#5581F5
oklch(63.1% 0.18 265.8)
-
Step 600
600
#3D67E4
oklch(55.6% 0.196 266.1)
-
Step 700
700 (this color)
#3359CB
oklch(50.5% 0.182 266)
-
Step 800
800
#2746A0
oklch(42.7% 0.151 265.8)
-
Step 900
900
#243C7F
oklch(37.7% 0.117 266.1)
-
Step 950
950
#15244A
oklch(27% 0.073 265.6)
#3359CB 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) | #0069CF | 0.042 |
| Deuteranopia (no green cones) | #005BC9 | 0.027 |
| Tritanopia (no blue cones) | #007589 | 0.144 |
| Achromatopsia (no color) | #626262 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3359CB
#3359CB
oklch(50.5% 0.182 266)
- #7F5F00
#7F5F00
oklch(50.5% 0.103 85.5)
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 #3359CB, closest first.
No curated palette has a color within ΔE 0.04 of #3359CB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.037
- Azul #1D5DEC ΔE 0.052
- Royal Blue #4169E1 ΔE 0.055
- Blue Blue #2242C7 ΔE 0.059
- Iris #6258C4 ΔE 0.060
- Neon Blue #4361EE ΔE 0.061
- Mid Blue #276AB3 ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.069
Use #3359CB 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.