#3A5CCC
Closest named color: Warm Blue (#4B57DB). oklch(51.5% 0.178 267.1), rgb(58, 92, 204).
Aa
White text reads best on this color (5.86:1).
About this color
#3A5CCC is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.178 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.032 away. White text reads best on it, at 5.86:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.58:1 |
| White text | 5.86:1 |
Values
| HEX | #3A5CCC |
| RGB | rgb(58, 92, 204) |
| HSL | hsl(226, 59%, 51%) |
| OKLCH | oklch(51.5% 0.178 267.1) |
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 #3A5CCC | 5.86:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #3A5CCC | 3.58:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #3A5CCC text on white | 5.86:1 | AA | Lc 78.9 | Fine for body text |
| #3A5CCC text on black | 3.58:1 | AA large text | Lc -22.9 | 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
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9FA
oklch(88.5% 0.048 267.2)
-
Step 300
300
#A8BFF9
oklch(80.8% 0.086 267.7)
-
Step 400
400
#7A9CF6
oklch(70.6% 0.138 267.2)
-
Step 500
500
#5A81F3
oklch(63.2% 0.176 267.1)
-
Step 600
600
#4167E1
oklch(55.6% 0.191 266.9)
-
Step 700
700 (this color)
#3A5CCC
oklch(51.5% 0.178 267.1)
-
Step 800
800
#2B469E
oklch(42.7% 0.147 267)
-
Step 900
900
#263C7E
oklch(37.7% 0.115 266.9)
-
Step 950
950
#16244A
oklch(27.1% 0.073 266.4)
#3A5CCC 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) | #006CD0 | 0.045 |
| Deuteranopia (no green cones) | #005ECA | 0.032 |
| Tritanopia (no blue cones) | #00778B | 0.142 |
| Achromatopsia (no color) | #656565 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A5CCC
#3A5CCC
oklch(51.5% 0.178 267.1)
- #816300
#816300
oklch(51.6% 0.105 87.8)
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 #3A5CCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.032
- Royal Blue #4169E1 ΔE 0.046
- Iris #6258C4 ΔE 0.052
- Azul #1D5DEC ΔE 0.052
- Neon Blue #4361EE ΔE 0.055
- Mid Blue #276AB3 ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.059
- Slate Blue #6A5ACD ΔE 0.063
Use #3A5CCC 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.