#3357BE
Closest named color: Warm Blue (#4B57DB). oklch(49.1% 0.167 265.9), rgb(51, 87, 190).
Aa
White text reads best on this color (6.46:1).
About this color
#3357BE is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.167 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.054 away. White text reads best on it, at 6.46:1.
| 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 | 6.46:1 |
Values
| HEX | #3357BE |
| RGB | rgb(51, 87, 190) |
| HSL | hsl(224, 58%, 47%) |
| OKLCH | oklch(49.1% 0.167 265.9) |
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 #3357BE | 6.46:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #3357BE | 3.24:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #3357BE text on white | 6.46:1 | AA | Lc 81.6 | Fine for body text |
| #3357BE text on black | 3.24:1 | AA large text | Lc -20.2 | 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
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CBD9F8
oklch(88.5% 0.045 266.2)
-
Step 300
300
#A8C0F6
oklch(80.9% 0.081 266)
-
Step 400
400
#7A9EF1
oklch(70.8% 0.129 265.5)
-
Step 500
500
#5A83ED
oklch(63.2% 0.165 265.9)
-
Step 600
600
#4169DB
oklch(55.5% 0.18 266.1)
-
Step 700
700 (this color)
#3357BE
oklch(49.1% 0.167 265.9)
-
Step 800
800
#2A489A
oklch(42.8% 0.139 265.7)
-
Step 900
900
#263D7A
oklch(37.7% 0.108 265.9)
-
Step 950
950
#162448
oklch(26.9% 0.07 265.9)
#3357BE 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) | #0065C2 | 0.039 |
| Deuteranopia (no green cones) | #0058BC | 0.028 |
| Tritanopia (no blue cones) | #007082 | 0.133 |
| Achromatopsia (no color) | #5E5E5E | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3357BE
#3357BE
oklch(49.1% 0.167 265.9)
- #7A5B00
#7A5B00
oklch(49% 0.1 85.4)
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 #3357BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.054
- Mid Blue #276AB3 ΔE 0.055
- Blue Blue #2242C7 ΔE 0.056
- Iris #6258C4 ΔE 0.062
- French Blue #436BAD ΔE 0.068
- Blue With A Hint Of Purple #533CC6 ΔE 0.068
- Majorelle Blue #3F37C9 ΔE 0.070
- Royal Blue #4169E1 ΔE 0.072
Use #3357BE 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.