#1A59CC
Closest named color: Azul (#1D5DEC). oklch(49.8% 0.19 261.3), rgb(26, 89, 204).
Aa
White text reads best on this color (6.27:1).
About this color
#1A59CC is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.190 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.051 away. White text reads best on it, at 6.27:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.190) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.34:1 |
| White text | 6.27:1 |
Values
| HEX | #1A59CC |
| RGB | rgb(26, 89, 204) |
| HSL | hsl(219, 77%, 45%) |
| OKLCH | oklch(49.8% 0.19 261.3) |
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 #1A59CC | 6.27:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #1A59CC | 3.34:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #1A59CC text on white | 6.27:1 | AA | Lc 80.6 | Fine for body text |
| #1A59CC text on black | 3.34:1 | AA large text | Lc -21.3 | 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
#E0EAFC
oklch(93.5% 0.027 262.3)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#A0C1FC
oklch(80.8% 0.091 261.8)
-
Step 400
400
#6B9FFB
oklch(70.7% 0.146 261.1)
-
Step 500
500
#4483F9
oklch(63% 0.188 261.6)
-
Step 600
600
#2569E8
oklch(55.5% 0.204 261.5)
-
Step 700
700 (this color)
#1A59CC
oklch(49.8% 0.19 261.3)
-
Step 800
800
#1648A3
oklch(42.8% 0.157 261.2)
-
Step 900
900
#193D81
oklch(37.6% 0.122 261.6)
-
Step 950
950
#0F254C
oklch(27.1% 0.078 260.9)
#1A59CC 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) | #0068D0 | 0.037 |
| Deuteranopia (no green cones) | #0058CA | 0.011 |
| Tritanopia (no blue cones) | #00768A | 0.144 |
| Achromatopsia (no color) | #606060 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A59CC
#1A59CC
oklch(49.8% 0.19 261.3)
- #805B00
#805B00
oklch(49.7% 0.103 81)
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 #1A59CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.051
- Warm Blue #4B57DB ΔE 0.051
- Blue Blue #2242C7 ΔE 0.053
- Royal Blue #4169E1 ΔE 0.064
- Mid Blue #276AB3 ΔE 0.064
- Neon Blue #4361EE ΔE 0.068
- Cerulean Blue #056EEE ΔE 0.071
- Majorelle Blue #3F37C9 ΔE 0.074
Use #1A59CC 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.