#3A83CA
Closest named color: Water Blue (#0E87CC). oklch(59.7% 0.131 250.4), rgb(58, 131, 202).
Aa
Black text reads best on this color (5.27:1).
About this color
#3A83CA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.131 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.021 away. Black text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.27:1 |
| White text | 3.97:1 |
Values
| HEX | #3A83CA |
| RGB | rgb(58, 131, 202) |
| HSL | hsl(210, 58%, 51%) |
| OKLCH | oklch(59.7% 0.131 250.4) |
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 #3A83CA | 3.97:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #3A83CA | 5.27:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #3A83CA text on white | 3.97:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #3A83CA text on black | 5.27:1 | AA | Lc -34.9 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DBF0
oklch(88.4% 0.036 250.9)
-
Step 300
300
#A2C4E9
oklch(80.8% 0.064 250.8)
-
Step 400
400
#6EA5DE
oklch(70.7% 0.102 250.3)
-
Step 500
500 (this color)
#3A83CA
oklch(59.7% 0.131 250.4)
-
Step 600
600
#2176C2
oklch(55.6% 0.141 250.3)
-
Step 700
700
#1163A8
oklch(49.2% 0.132 250.3)
-
Step 800
800
#135188
oklch(42.7% 0.109 250.3)
-
Step 900
900
#18436D
oklch(37.6% 0.086 250.8)
-
Step 950
950
#102840
oklch(27.1% 0.054 250.5)
#3A83CA 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) | #6387CD | 0.043 |
| Deuteranopia (no green cones) | #4E79C9 | 0.030 |
| Tritanopia (no blue cones) | #00949D | 0.099 |
| Achromatopsia (no color) | #7F7F7F | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A83CA
#3A83CA
oklch(59.7% 0.131 250.4)
- #AF7000
#AF7000
oklch(59.8% 0.129 70.8)
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 #3A83CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.021
- Cool Blue #4984B8 ΔE 0.030
- Windows Blue #3778BF ΔE 0.033
- Steel Blue #4682B4 ΔE 0.034
- Dark Sky Blue #448EE4 ΔE 0.048
- Off Blue #5684AE ΔE 0.049
- Blue NCS #118AB2 ΔE 0.051
- Nice Blue #107AB0 ΔE 0.053
Use #3A83CA 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.