#1A7CD1
Closest named color: Windows Blue (#3778BF). oklch(57.8% 0.155 250.7), rgb(26, 124, 209).
Aa
Black text reads best on this color (4.84:1).
About this color
#1A7CD1 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.155 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.030 away. Black text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.84:1 |
| White text | 4.33:1 |
Values
| HEX | #1A7CD1 |
| RGB | rgb(26, 124, 209) |
| HSL | hsl(208, 78%, 46%) |
| OKLCH | oklch(57.8% 0.155 250.7) |
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 #1A7CD1 | 4.33:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #1A7CD1 | 4.84:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #1A7CD1 text on white | 4.33:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #1A7CD1 text on black | 4.84:1 | AA | Lc -32.2 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF3
oklch(88.6% 0.039 250.7)
-
Step 300
300
#9FC5ED
oklch(81% 0.07 250)
-
Step 400
400
#69A5E4
oklch(70.7% 0.112 250.8)
-
Step 500
500
#3C8DDC
oklch(63.1% 0.143 250.7)
-
Step 600
600 (this color)
#1A7CD1
oklch(57.8% 0.155 250.7)
-
Step 700
700
#0062AD
oklch(49.1% 0.142 250.8)
-
Step 800
800
#06508D
oklch(42.6% 0.12 250.9)
-
Step 900
900
#124371
oklch(37.6% 0.094 250.8)
-
Step 950
950
#0D2842
oklch(27.1% 0.059 250.2)
#1A7CD1 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) | #5182D4 | 0.045 |
| Deuteranopia (no green cones) | #3272CF | 0.027 |
| Tritanopia (no blue cones) | #00909C | 0.113 |
| Achromatopsia (no color) | #797979 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A7CD1
#1A7CD1
oklch(57.8% 0.155 250.7)
- #A76B00
#A76B00
oklch(57.8% 0.124 71.1)
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 #1A7CD1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.030
- Water Blue #0E87CC ΔE 0.033
- Nice Blue #107AB0 ΔE 0.052
- Cool Blue #4984B8 ΔE 0.058
- Steel Blue #4682B4 ΔE 0.058
- Royal Blue #4169E1 ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.061
- Mid Blue #276AB3 ΔE 0.062
Use #1A7CD1 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.