#1E73AC
Closest named color: Nice Blue (#107AB0). oklch(53.5% 0.118 243.7), rgb(30, 115, 172).
Aa
White text reads best on this color (5.11:1).
About this color
#1E73AC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.118 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.020 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #1E73AC |
| RGB | rgb(30, 115, 172) |
| HSL | hsl(204, 70%, 40%) |
| OKLCH | oklch(53.5% 0.118 243.7) |
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 #1E73AC | 5.11:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #1E73AC | 4.10:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #1E73AC text on white | 5.11:1 | AA | Lc 74.9 | Content text, not long reading |
| #1E73AC text on black | 4.10:1 | AA large text | Lc -26.8 | 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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#C9DCEC
oklch(88.5% 0.03 243.4)
-
Step 300
300
#A4C5E1
oklch(80.9% 0.053 244.1)
-
Step 400
400
#71A7D2
oklch(70.7% 0.085 243.4)
-
Step 500
500
#4990C6
oklch(63.1% 0.109 243.7)
-
Step 600
600 (this color)
#1E73AC
oklch(53.5% 0.118 243.7)
-
Step 700
700
#17669A
oklch(49.1% 0.11 243.7)
-
Step 800
800
#17537D
oklch(42.6% 0.092 244.1)
-
Step 900
900
#1B4564
oklch(37.6% 0.071 243.7)
-
Step 950
950
#11293B
oklch(27.1% 0.045 243.2)
#1E73AC 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) | #5875AE | 0.052 |
| Deuteranopia (no green cones) | #4468AB | 0.039 |
| Tritanopia (no blue cones) | #008187 | 0.082 |
| Achromatopsia (no color) | #6E6E6E | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E73AC
#1E73AC
oklch(53.5% 0.118 243.7)
- #9C5C09
#9C5C09
oklch(53.6% 0.118 63.9)
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 #1E73AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.020
- Flat Blue #3C73A8 ΔE 0.021
- Muted Blue #3B719F ΔE 0.026
- Ocean Blue #03719C ΔE 0.028
- Mid Blue #276AB3 ΔE 0.030
- French Blue #436BAD ΔE 0.033
- Windows Blue #3778BF ΔE 0.037
- Sea Blue #047495 ΔE 0.040
Use #1E73AC 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.