#42698E
Closest named color: Denim (#3B638C). oklch(50.8% 0.074 248.2), rgb(66, 105, 142).
Aa
White text reads best on this color (5.76:1).
About this color
#42698E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.074 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.020 away. White text reads best on it, at 5.76:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.64:1 |
| White text | 5.76:1 |
Values
| HEX | #42698E |
| RGB | rgb(66, 105, 142) |
| HSL | hsl(209, 37%, 41%) |
| OKLCH | oklch(50.8% 0.074 248.2) |
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 #42698E | 5.76:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #42698E | 3.64:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #42698E text on white | 5.76:1 | AA | Lc 78.7 | Fine for body text |
| #42698E text on black | 3.64:1 | AA large text | Lc -23.1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EBF1
oklch(93.7% 0.01 247.9)
-
Step 200
200
#CFDBE6
oklch(88.6% 0.02 245.7)
-
Step 300
300
#AFC3D7
oklch(80.8% 0.036 248.3)
-
Step 400
400
#85A4C3
oklch(70.6% 0.057 248.6)
-
Step 500
500
#668EB4
oklch(63.2% 0.073 247.8)
-
Step 600
600
#4C77A0
oklch(55.5% 0.08 248.3)
-
Step 700
700 (this color)
#42698E
oklch(50.8% 0.074 248.2)
-
Step 800
800
#33526F
oklch(42.8% 0.061 247.8)
-
Step 900
900
#2D445A
oklch(37.8% 0.048 248.1)
-
Step 950
950
#1B2835
oklch(27.1% 0.03 249)
#42698E 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) | #5A6A90 | 0.031 |
| Deuteranopia (no green cones) | #50628D | 0.025 |
| Tritanopia (no blue cones) | #187276 | 0.063 |
| Achromatopsia (no color) | #666666 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42698E
#42698E
oklch(50.8% 0.074 248.2)
- #815D34
#815D34
oklch(50.7% 0.074 68.4)
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 #42698E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.020
- Muted Blue #3B719F ΔE 0.031
- Dusky Blue #475F94 ΔE 0.033
- Metallic Blue #4F738E ΔE 0.036
- Dull Blue #49759C ΔE 0.039
- Ocean Blue #03719C ΔE 0.041
- Peacock Blue #016795 ΔE 0.042
- Sea Blue #047495 ΔE 0.043
Use #42698E 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.