#1A5CCB
Closest named color: Warm Blue (#4B57DB). oklch(50.3% 0.185 260.5), rgb(26, 92, 203).
Aa
White text reads best on this color (6.10:1).
About this color
#1A5CCB is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.185 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.051 away. White text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.185) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.43:1 |
| White text | 6.10:1 |
Values
| HEX | #1A5CCB |
| RGB | rgb(26, 92, 203) |
| HSL | hsl(218, 77%, 45%) |
| OKLCH | oklch(50.3% 0.185 260.5) |
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 #1A5CCB | 6.10:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #1A5CCB | 3.43:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #1A5CCB text on white | 6.10:1 | AA | Lc 79.8 | Fine for body text |
| #1A5CCB text on black | 3.43:1 | AA large text | Lc -22.0 | 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
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C7DAFB
oklch(88.5% 0.05 261.5)
-
Step 300
300
#A0C2FB
oklch(81% 0.089 260.6)
-
Step 400
400
#6BA0F9
oklch(70.8% 0.143 260.3)
-
Step 500
500
#4385F6
oklch(63.2% 0.182 260.4)
-
Step 600
600
#236BE5
oklch(55.7% 0.199 260.5)
-
Step 700
700 (this color)
#1A5CCB
oklch(50.3% 0.185 260.5)
-
Step 800
800
#1549A1
oklch(42.8% 0.153 260.5)
-
Step 900
900
#183E80
oklch(37.7% 0.12 260.6)
-
Step 950
950
#0F254B
oklch(27% 0.076 260.5)
#1A5CCB 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) | #006ACF | 0.035 |
| Deuteranopia (no green cones) | #005AC9 | 0.012 |
| Tritanopia (no blue cones) | #00788A | 0.142 |
| Achromatopsia (no color) | #626262 | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A5CCB
#1A5CCB
oklch(50.3% 0.185 260.5)
- #835C00
#835C00
oklch(50.3% 0.104 79.8)
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 #1A5CCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.051
- Azul #1D5DEC ΔE 0.051
- Mid Blue #276AB3 ΔE 0.057
- Royal Blue #4169E1 ΔE 0.060
- Blue Blue #2242C7 ΔE 0.060
- Neon Blue #4361EE ΔE 0.067
- Cerulean Blue #056EEE ΔE 0.068
- French Blue #436BAD ΔE 0.076
Use #1A5CCB 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.