#3057DA
Closest named color: Warm Blue (#4B57DB). oklch(51.3% 0.205 266.3), rgb(48, 87, 218).
Aa
White text reads best on this color (5.99:1).
About this color
#3057DA is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.205 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.029 away. White text reads best on it, at 5.99:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.50:1 |
| White text | 5.99:1 |
Values
| HEX | #3057DA |
| RGB | rgb(48, 87, 218) |
| HSL | hsl(226, 70%, 52%) |
| OKLCH | oklch(51.3% 0.205 266.3) |
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 #3057DA | 5.99:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #3057DA | 3.50:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #3057DA text on white | 5.99:1 | AA | Lc 79.3 | Fine for body text |
| #3057DA text on black | 3.50:1 | AA large text | Lc -22.5 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4BFFF
oklch(80.8% 0.096 266.6)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#517EFF
oklch(63% 0.198 266.3)
-
Step 600
600
#3762F2
oklch(55.6% 0.221 266.3)
-
Step 700
700 (this color)
#3057DA
oklch(51.3% 0.205 266.3)
-
Step 800
800
#2443AA
oklch(42.8% 0.169 266.3)
-
Step 900
900
#213A87
oklch(37.8% 0.133 266.4)
-
Step 950
950
#13234F
oklch(27.1% 0.084 265.9)
#3057DA 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) | #006BDE | 0.048 |
| Deuteranopia (no green cones) | #005BD7 | 0.024 |
| Tritanopia (no blue cones) | #007990 | 0.161 |
| Achromatopsia (no color) | #636363 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3057DA
#3057DA
oklch(51.3% 0.205 266.3)
- #816200
#816200
oklch(51.3% 0.105 86.9)
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 #3057DA, closest first.
No curated palette has a color within ΔE 0.04 of #3057DA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.029
- Azul #1D5DEC ΔE 0.032
- Neon Blue #4361EE ΔE 0.045
- Royal Blue #4169E1 ΔE 0.050
- Cerulean Blue #056EEE ΔE 0.060
- Blue Blue #2242C7 ΔE 0.060
- Electric Blue #0652FF ΔE 0.061
- Bright Blue #0165FC ΔE 0.061
Use #3057DA 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.