#434F9E
Closest named color: Twilight (#4E518B). oklch(46% 0.128 273.8), rgb(67, 79, 158).
Aa
White text reads best on this color (7.36:1).
About this color
#434F9E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.128 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.036 away. White text reads best on it, at 7.36:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.85:1 |
| White text | 7.36:1 |
Values
| HEX | #434F9E |
| RGB | rgb(67, 79, 158) |
| HSL | hsl(232, 40%, 44%) |
| OKLCH | oklch(46% 0.128 273.8) |
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 #434F9E | 7.36:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #434F9E | 2.85:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #434F9E text on white | 7.36:1 | AAA | Lc 85.4 | Fine for body text |
| #434F9E text on black | 2.85:1 | Fails | Lc -16.7 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F1
oklch(88.5% 0.035 274.9)
-
Step 300
300
#B4BEE9
oklch(80.8% 0.062 274.7)
-
Step 400
400
#8D9CDE
oklch(70.7% 0.098 273.8)
-
Step 500
500
#7282D5
oklch(63% 0.126 274)
-
Step 600
600
#5B6AC3
oklch(55.6% 0.138 273.9)
-
Step 700
700 (this color)
#434F9E
oklch(46% 0.128 273.8)
-
Step 800
800
#3E4888
oklch(42.6% 0.106 274.3)
-
Step 900
900
#343D6D
oklch(37.7% 0.083 273.8)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#434F9E 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) | #285AA1 | 0.038 |
| Deuteranopia (no green cones) | #19529C | 0.042 |
| Tritanopia (no blue cones) | #0B616F | 0.113 |
| Achromatopsia (no color) | #565656 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434F9E
#434F9E
oklch(46% 0.128 273.8)
- #695600
#695600
oklch(45.9% 0.094 94)
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 #434F9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.036
- Blueberry #464196 ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.042
- Dusk Blue #26538D ΔE 0.045
- Dusky Blue #475F94 ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.053
- Dusk #4E5481 ΔE 0.054
- Cobalt #1E488F ΔE 0.055
Use #434F9E 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.