#3A54CC
Closest named color: Warm Blue (#4B57DB). oklch(50% 0.188 269.1), rgb(58, 84, 204).
Aa
White text reads best on this color (6.32:1).
About this color
#3A54CC is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.188 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.033 away. White text reads best on it, at 6.32:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.31:1 |
| White text | 6.32:1 |
Values
| HEX | #3A54CC |
| RGB | rgb(58, 84, 204) |
| HSL | hsl(229, 59%, 51%) |
| OKLCH | oklch(50% 0.188 269.1) |
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 #3A54CC | 6.32:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #3A54CC | 3.31:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #3A54CC text on white | 6.32:1 | AA | Lc 80.9 | Fine for body text |
| #3A54CC text on black | 3.31:1 | AA large text | Lc -20.9 | 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
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CBD8FC
oklch(88.4% 0.052 269.6)
-
Step 300
300
#A9BFFC
oklch(81% 0.09 269)
-
Step 400
400
#7C9BFB
oklch(70.8% 0.145 269)
-
Step 500
500
#5D7EF8
oklch(63.1% 0.185 269.1)
-
Step 600
600
#4663E7
oklch(55.5% 0.202 269.3)
-
Step 700
700 (this color)
#3A54CC
oklch(50% 0.188 269.1)
-
Step 800
800
#2E43A3
oklch(42.7% 0.157 269.2)
-
Step 900
900
#283A81
oklch(37.7% 0.122 269.1)
-
Step 950
950
#17234B
oklch(27% 0.076 268.4)
#3A54CC 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) | #0067D0 | 0.050 |
| Deuteranopia (no green cones) | #0059CA | 0.034 |
| Tritanopia (no blue cones) | #007288 | 0.150 |
| Achromatopsia (no color) | #606060 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A54CC
#3A54CC
oklch(50% 0.188 269.1)
- #7A5F00
#7A5F00
oklch(49.9% 0.102 89.3)
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 #3A54CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.033
- Blue Blue #2242C7 ΔE 0.052
- Azul #1D5DEC ΔE 0.055
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Iris #6258C4 ΔE 0.057
- Majorelle Blue #3F37C9 ΔE 0.060
- Royal Blue #4169E1 ΔE 0.061
- Blurple #5539CC ΔE 0.061
Use #3A54CC 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.