#417E9B
Closest named color: Cerulean (#457B9D). oklch(56.4% 0.077 230.9), rgb(65, 126, 155).
Aa
Black text reads best on this color (4.68:1).
About this color
#417E9B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.077 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.011 away. Black text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #417E9B |
| RGB | rgb(65, 126, 155) |
| HSL | hsl(199, 41%, 43%) |
| OKLCH | oklch(56.4% 0.077 230.9) |
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 #417E9B | 4.48:1 | AA large text | Lc -76.4 | Fine for body text |
| Black text on #417E9B | 4.68:1 | AA | Lc 33.1 | Non-text elements, placeholder text |
| #417E9B text on white | 4.48:1 | AA large text | Lc 71.0 | Content text, not long reading |
| #417E9B text on black | 4.68:1 | AA | Lc -30.7 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#ABC5D3
oklch(80.8% 0.034 231.3)
-
Step 400
400
#7DA7BD
oklch(70.6% 0.056 231.3)
-
Step 500
500
#5B92AD
oklch(63.2% 0.071 230.7)
-
Step 600
600 (this color)
#417E9B
oklch(56.4% 0.077 230.9)
-
Step 700
700
#306882
oklch(49.1% 0.072 230.8)
-
Step 800
800
#29556A
oklch(42.8% 0.06 231.1)
-
Step 900
900
#264656
oklch(37.7% 0.047 231.6)
-
Step 950
950
#172932
oklch(27% 0.029 231)
#417E9B 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) | #707C9C | 0.054 |
| Deuteranopia (no green cones) | #63739B | 0.047 |
| Tritanopia (no blue cones) | #008687 | 0.055 |
| Achromatopsia (no color) | #777777 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #417E9B
#417E9B
oklch(56.4% 0.077 230.9)
- #9A684B
#9A684B
oklch(56.3% 0.077 50.7)
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 #417E9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.011
- Stormy Blue #507B9C ΔE 0.017
- Dull Blue #49759C ΔE 0.027
- Metallic Blue #4F738E ΔE 0.034
- Teal Blue #01889F ΔE 0.037
- Ocean #017B92 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.039
- Off Blue #5684AE ΔE 0.040
Use #417E9B 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.