#3D55BE
Closest named color: Warm Blue (#4B57DB). oklch(49.2% 0.167 269.6), rgb(61, 85, 190).
Aa
White text reads best on this color (6.47:1).
About this color
#3D55BE is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.167 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.049 away. White text reads best on it, at 6.47:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.24:1 |
| White text | 6.47:1 |
Values
| HEX | #3D55BE |
| RGB | rgb(61, 85, 190) |
| HSL | hsl(229, 51%, 49%) |
| OKLCH | oklch(49.2% 0.167 269.6) |
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 #3D55BE | 6.47:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #3D55BE | 3.24:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #3D55BE text on white | 6.47:1 | AA | Lc 81.7 | Fine for body text |
| #3D55BE text on black | 3.24:1 | AA large text | Lc -20.1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD9F8
oklch(88.6% 0.045 268.7)
-
Step 300
300
#ACBFF6
oklch(81% 0.081 269.7)
-
Step 400
400
#819CF1
oklch(70.8% 0.128 269.6)
-
Step 500
500
#6280EC
oklch(63% 0.165 269.5)
-
Step 600
600
#4B67DB
oklch(55.6% 0.18 269.5)
-
Step 700
700 (this color)
#3D55BE
oklch(49.2% 0.167 269.6)
-
Step 800
800
#324699
oklch(42.7% 0.137 269.5)
-
Step 900
900
#2B3C7A
oklch(37.7% 0.107 269.2)
-
Step 950
950
#192347
oklch(26.8% 0.068 269.7)
#3D55BE 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) | #0064C2 | 0.047 |
| Deuteranopia (no green cones) | #0058BC | 0.039 |
| Tritanopia (no blue cones) | #006E81 | 0.136 |
| Achromatopsia (no color) | #5E5E5E | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D55BE
#3D55BE
oklch(49.2% 0.167 269.6)
- #775D00
#775D00
oklch(49.1% 0.1 89.6)
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 #3D55BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.049
- Iris #6258C4 ΔE 0.053
- Blue Blue #2242C7 ΔE 0.058
- Blue With A Hint Of Purple #533CC6 ΔE 0.060
- Mid Blue #276AB3 ΔE 0.061
- Bluey Purple #6241C7 ΔE 0.066
- Majorelle Blue #3F37C9 ΔE 0.066
- Blurple #5539CC ΔE 0.067
Use #3D55BE 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.