#1A59BF
Closest named color: Mid Blue (#276AB3). oklch(48.8% 0.172 260.1), rgb(26, 89, 191).
Aa
White text reads best on this color (6.51:1).
About this color
#1A59BF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.172 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.054 away. White text reads best on it, at 6.51:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.22:1 |
| White text | 6.51:1 |
Values
| HEX | #1A59BF |
| RGB | rgb(26, 89, 191) |
| HSL | hsl(217, 76%, 43%) |
| OKLCH | oklch(48.8% 0.172 260.1) |
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 #1A59BF | 6.51:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #1A59BF | 3.22:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #1A59BF text on white | 6.51:1 | AA | Lc 81.7 | Fine for body text |
| #1A59BF text on black | 3.22:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFB
oklch(93.7% 0.024 259.8)
-
Step 200
200
#C8DAF9
oklch(88.5% 0.047 261.4)
-
Step 300
300
#A1C2F7
oklch(80.9% 0.084 259.8)
-
Step 400
400
#6EA0F3
oklch(70.6% 0.134 260.1)
-
Step 500
500
#4786EF
oklch(63.1% 0.171 260)
-
Step 600
600
#286DDD
oklch(55.6% 0.185 259.9)
-
Step 700
700 (this color)
#1A59BF
oklch(48.8% 0.172 260.1)
-
Step 800
800
#194A9B
oklch(42.6% 0.143 260.1)
-
Step 900
900
#1B3F7C
oklch(37.8% 0.112 260.3)
-
Step 950
950
#102548
oklch(26.9% 0.071 260)
#1A59BF 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) | #0065C3 | 0.031 |
| Deuteranopia (no green cones) | #0057BD | 0.012 |
| Tritanopia (no blue cones) | #007283 | 0.132 |
| Achromatopsia (no color) | #5E5E5E | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A59BF
#1A59BF
oklch(48.8% 0.172 260.1)
- #7D5800
#7D5800
oklch(48.7% 0.101 80.2)
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 #1A59BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.054
- Blue Blue #2242C7 ΔE 0.055
- Warm Blue #4B57DB ΔE 0.064
- Azul #1D5DEC ΔE 0.071
- French Blue #436BAD ΔE 0.072
- Denim Blue #3B5B92 ΔE 0.077
- Royal Blue #4169E1 ΔE 0.077
- Majorelle Blue #3F37C9 ΔE 0.077
Use #1A59BF 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.