#1A5FDB
Closest named color: Azul (#1D5DEC). oklch(52.3% 0.202 261.2), rgb(26, 95, 219).
Aa
White text reads best on this color (5.67:1).
About this color
#1A5FDB is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.202 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.027 away. White text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.202) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.70:1 |
| White text | 5.67:1 |
Values
| HEX | #1A5FDB |
| RGB | rgb(26, 95, 219) |
| HSL | hsl(219, 79%, 48%) |
| OKLCH | oklch(52.3% 0.202 261.2) |
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 #1A5FDB | 5.67:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #1A5FDB | 3.70:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #1A5FDB text on white | 5.67:1 | AA | Lc 77.6 | Fine for body text |
| #1A5FDB text on black | 3.70:1 | AA large text | Lc -24.2 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DAFE
oklch(88.4% 0.055 261.2)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699FFF
oklch(70.8% 0.152 261.1)
-
Step 500
500
#3E82FF
oklch(63% 0.199 261.3)
-
Step 600
600
#1C67EF
oklch(55.5% 0.217 261.3)
-
Step 700
700 (this color)
#1A5FDB
oklch(52.3% 0.202 261.2)
-
Step 800
800
#1046A8
oklch(42.6% 0.167 261.3)
-
Step 900
900
#153D85
oklch(37.8% 0.129 261.1)
-
Step 950
950
#0D244E
oklch(27% 0.083 261.2)
#1A5FDB 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) | #0070DF | 0.042 |
| Deuteranopia (no green cones) | #005FD9 | 0.009 |
| Tritanopia (no blue cones) | #007E94 | 0.153 |
| Achromatopsia (no color) | #676767 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A5FDB
#1A5FDB
oklch(52.3% 0.202 261.2)
- #896200
#896200
oklch(52.3% 0.108 81.3)
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 #1A5FDB, closest first.
No curated palette has a color within ΔE 0.04 of #1A5FDB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.027
- Warm Blue #4B57DB ΔE 0.043
- Royal Blue #4169E1 ΔE 0.043
- Cerulean Blue #056EEE ΔE 0.045
- Neon Blue #4361EE ΔE 0.045
- Bright Blue #0165FC ΔE 0.052
- Electric Blue #0652FF ΔE 0.062
- Mid Blue #276AB3 ΔE 0.072
Use #1A5FDB 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.