#3A55C4
Closest named color: Warm Blue (#4B57DB). oklch(49.5% 0.176 268.7), rgb(58, 85, 196).
Aa
White text reads best on this color (6.40:1).
About this color
#3A55C4 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.176 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.042 away. White text reads best on it, at 6.40:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #3A55C4 |
| RGB | rgb(58, 85, 196) |
| HSL | hsl(228, 54%, 50%) |
| OKLCH | oklch(49.5% 0.176 268.7) |
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 #3A55C4 | 6.40:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #3A55C4 | 3.27:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #3A55C4 text on white | 6.40:1 | AA | Lc 81.4 | Fine for body text |
| #3A55C4 text on black | 3.27:1 | AA large text | Lc -20.5 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9F9
oklch(88.6% 0.046 267.9)
-
Step 300
300
#AABFF9
oklch(80.9% 0.086 269)
-
Step 400
400
#7D9CF5
oklch(70.7% 0.135 268.3)
-
Step 500
500
#5E80F1
oklch(63.1% 0.173 268.5)
-
Step 600
600
#4766E0
oklch(55.6% 0.189 268.7)
-
Step 700
700 (this color)
#3A55C4
oklch(49.5% 0.176 268.7)
-
Step 800
800
#2F459D
oklch(42.6% 0.145 268.8)
-
Step 900
900
#293B7D
oklch(37.6% 0.114 268.9)
-
Step 950
950
#182349
oklch(26.9% 0.072 269)
#3A55C4 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) | #0065C8 | 0.046 |
| Deuteranopia (no green cones) | #0059C2 | 0.035 |
| Tritanopia (no blue cones) | #007084 | 0.142 |
| Achromatopsia (no color) | #5F5F5F | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A55C4
#3A55C4
oklch(49.5% 0.176 268.7)
- #795E00
#795E00
oklch(49.5% 0.101 89.1)
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 #3A55C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.042
- Blue Blue #2242C7 ΔE 0.054
- Iris #6258C4 ΔE 0.056
- Blue With A Hint Of Purple #533CC6 ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.063
- Mid Blue #276AB3 ΔE 0.064
- Blurple #5539CC ΔE 0.065
- Azul #1D5DEC ΔE 0.066
Use #3A55C4 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.