#1757CF
Closest named color: Azul (#1D5DEC). oklch(49.6% 0.196 261.6), rgb(23, 87, 207).
Aa
White text reads best on this color (6.36:1).
About this color
#1757CF is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.196 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.048 away. White text reads best on it, at 6.36:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.196) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.30:1 |
| White text | 6.36:1 |
Values
| HEX | #1757CF |
| RGB | rgb(23, 87, 207) |
| HSL | hsl(219, 80%, 45%) |
| OKLCH | oklch(49.6% 0.196 261.6) |
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 #1757CF | 6.36:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #1757CF | 3.30:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #1757CF text on white | 6.36:1 | AA | Lc 80.9 | Fine for body text |
| #1757CF text on black | 3.30:1 | AA large text | Lc -21.0 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C6DAFD
oklch(88.5% 0.053 261.7)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6A9EFE
oklch(70.6% 0.152 261.7)
-
Step 500
500
#4283FD
oklch(63.2% 0.194 261.6)
-
Step 600
600
#2268EC
oklch(55.6% 0.211 261.6)
-
Step 700
700 (this color)
#1757CF
oklch(49.6% 0.196 261.6)
-
Step 800
800
#1447A6
oklch(42.7% 0.162 261.5)
-
Step 900
900
#173D83
oklch(37.7% 0.126 261.3)
-
Step 950
950
#0F244D
oklch(27% 0.081 262.1)
#1757CF 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) | #0068D3 | 0.042 |
| Deuteranopia (no green cones) | #0057CD | 0.008 |
| Tritanopia (no blue cones) | #00768A | 0.151 |
| Achromatopsia (no color) | #5F5F5F | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1757CF
#1757CF
oklch(49.6% 0.196 261.6)
- #7F5B00
#7F5B00
oklch(49.6% 0.102 81.7)
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 #1757CF, closest first.
No curated palette has a color within ΔE 0.04 of #1757CF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.048
- Blue Blue #2242C7 ΔE 0.048
- Warm Blue #4B57DB ΔE 0.051
- Royal Blue #4169E1 ΔE 0.066
- Neon Blue #4361EE ΔE 0.068
- Majorelle Blue #3F37C9 ΔE 0.070
- Mid Blue #276AB3 ΔE 0.071
- Cerulean Blue #056EEE ΔE 0.072
Use #1757CF 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.