#407CAB
Closest named color: Cerulean (#457B9D). oklch(56.7% 0.096 244.3), rgb(64, 124, 171).
Aa
Black text reads best on this color (4.68:1).
About this color
#407CAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.096 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.022 away. Black text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.68:1 |
| White text | 4.47:1 |
Values
| HEX | #407CAB |
| RGB | rgb(64, 124, 171) |
| HSL | hsl(206, 46%, 46%) |
| OKLCH | oklch(56.7% 0.096 244.3) |
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 #407CAB | 4.47:1 | AA large text | Lc -76.4 | Fine for body text |
| Black text on #407CAB | 4.68:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #407CAB text on white | 4.47:1 | AA large text | Lc 70.9 | Content text, not long reading |
| #407CAB text on black | 4.68:1 | AA | Lc -30.8 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE8
oklch(88.4% 0.024 244.2)
-
Step 300
300
#AAC4DB
oklch(80.8% 0.043 245.1)
-
Step 400
400
#7CA6C9
oklch(70.8% 0.069 244.1)
-
Step 500
500
#598FBB
oklch(63% 0.088 244.4)
-
Step 600
600 (this color)
#407CAB
oklch(56.7% 0.096 244.3)
-
Step 700
700
#2E6590
oklch(49% 0.09 244.8)
-
Step 800
800
#285375
oklch(42.8% 0.074 244.7)
-
Step 900
900
#25455E
oklch(37.8% 0.057 243.7)
-
Step 950
950
#162837
oklch(26.9% 0.037 244.9)
#407CAB 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) | #677DAD | 0.044 |
| Deuteranopia (no green cones) | #5972AA | 0.036 |
| Tritanopia (no blue cones) | #00878C | 0.074 |
| Achromatopsia (no color) | #777777 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #407CAB
#407CAB
oklch(56.7% 0.096 244.3)
- #9D6934
#9D6934
oklch(56.5% 0.096 64.1)
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 #407CAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.022
- Steel Blue #4682B4 ΔE 0.022
- Stormy Blue #507B9C ΔE 0.026
- Flat Blue #3C73A8 ΔE 0.027
- Dull Blue #49759C ΔE 0.027
- Nice Blue #107AB0 ΔE 0.030
- Cool Blue #4984B8 ΔE 0.030
- Off Blue #5684AE ΔE 0.034
Use #407CAB 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.