#1E66A8
Closest named color: Mid Blue (#276AB3). oklch(50.1% 0.126 250.5), rgb(30, 102, 168).
Aa
White text reads best on this color (5.96:1).
About this color
#1E66A8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.126 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.021 away. White text reads best on it, at 5.96:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.52:1 |
| White text | 5.96:1 |
Values
| HEX | #1E66A8 |
| RGB | rgb(30, 102, 168) |
| HSL | hsl(209, 70%, 39%) |
| OKLCH | oklch(50.1% 0.126 250.5) |
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 #1E66A8 | 5.96:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #1E66A8 | 3.52:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #1E66A8 text on white | 5.96:1 | AA | Lc 79.4 | Fine for body text |
| #1E66A8 text on black | 3.52:1 | AA large text | Lc -22.4 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBEF
oklch(88.4% 0.034 251)
-
Step 300
300
#A4C4E7
oklch(80.9% 0.061 250.9)
-
Step 400
400
#71A5DB
oklch(70.7% 0.097 250.2)
-
Step 500
500
#498DD2
oklch(63% 0.125 250.8)
-
Step 600
600
#2876BF
oklch(55.6% 0.136 250.6)
-
Step 700
700 (this color)
#1E66A8
oklch(50.1% 0.126 250.5)
-
Step 800
800
#195185
oklch(42.7% 0.104 250.4)
-
Step 900
900
#1C446B
oklch(37.8% 0.081 250.3)
-
Step 950
950
#11283F
oklch(27.1% 0.052 250.3)
#1E66A8 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) | #466AAB | 0.038 |
| Deuteranopia (no green cones) | #305EA7 | 0.024 |
| Tritanopia (no blue cones) | #00767F | 0.092 |
| Achromatopsia (no color) | #636363 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E66A8
#1E66A8
oklch(50.1% 0.126 250.5)
- #8A5700
#8A5700
oklch(50.2% 0.108 70.5)
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 #1E66A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.021
- Peacock Blue #016795 ΔE 0.034
- French Blue #436BAD ΔE 0.037
- Ocean Blue #03719C ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.046
- Muted Blue #3B719F ΔE 0.046
- Denim #3B638C ΔE 0.047
Use #1E66A8 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.