#1C5FFF
Closest named color: Bright Blue (#0165FC). oklch(55.4% 0.246 263.3), rgb(28, 95, 255).
Aa
White text reads best on this color (5.08:1).
About this color
#1C5FFF is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.246 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Blue (#0165FC), ΔE 0.014 away. White text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.246) |
| Temperature | cool |
| Nearest name | Bright Blue (#0165FC) |
| Black text | 4.13:1 |
| White text | 5.08:1 |
Values
| HEX | #1C5FFF |
| RGB | rgb(28, 95, 255) |
| HSL | hsl(222, 100%, 55%) |
| OKLCH | oklch(55.4% 0.246 263.3) |
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 #1C5FFF | 5.08:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #1C5FFF | 4.13:1 | AA large text | Lc 30.0 | Dividers and decoration only |
| #1C5FFF text on white | 5.08:1 | AA | Lc 74.1 | Content text, not long reading |
| #1C5FFF text on black | 4.13:1 | AA large text | Lc -27.6 | 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 600.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#DFEAFF
oklch(93.5% 0.031 263.5)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A1C1FF
oklch(81% 0.095 263.3)
-
Step 400
400
#6E9DFF
oklch(70.6% 0.153 263.6)
-
Step 500
500
#4781FF
oklch(63.2% 0.197 263.3)
-
Step 600
600 (this color)
#1C5FFF
oklch(55.4% 0.246 263.3)
-
Step 700
700
#114DDF
oklch(49.1% 0.229 263.4)
-
Step 800
800
#1041B4
oklch(42.7% 0.189 263.2)
-
Step 900
900
#14398E
oklch(37.7% 0.147 263.3)
-
Step 950
950
#0D2253
oklch(26.9% 0.094 263.8)
#1C5FFF 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) | #0079FF | 0.059 |
| Deuteranopia (no green cones) | #0064FC | 0.013 |
| Tritanopia (no blue cones) | #008AA6 | 0.189 |
| Achromatopsia (no color) | #6E6E6E | 0.246 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C5FFF
#1C5FFF
oklch(55.4% 0.246 263.3)
- #926B00
#926B00
oklch(55.3% 0.114 83.3)
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 #1C5FFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Blue #0165FC ΔE 0.014
- Azul #1D5DEC ΔE 0.029
- Electric Blue #0652FF ΔE 0.030
- Neon Blue #4361EE ΔE 0.039
- Cerulean Blue #056EEE ΔE 0.042
- Royal Blue #4169E1 ΔE 0.059
- Clear Blue #247AFD ΔE 0.064
- Warm Blue #4B57DB ΔE 0.067
Use #1C5FFF 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.