#409EC0
Closest named color: Cadet Blue (#5F9EA0). oklch(65.8% 0.101 225.5), rgb(64, 158, 192).
Aa
Black text reads best on this color (6.86:1).
About this color
#409EC0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.101 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.052 away. Black text reads best on it, at 6.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.86:1 |
| White text | 3.05:1 |
Values
| HEX | #409EC0 |
| RGB | rgb(64, 158, 192) |
| HSL | hsl(196, 50%, 50%) |
| OKLCH | oklch(65.8% 0.101 225.5) |
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 #409EC0 | 3.05:1 | AA large text | Lc -62.5 | Content text, not long reading |
| Black text on #409EC0 | 6.86:1 | AA | Lc 46.9 | Large or bold text, headings |
| #409EC0 text on white | 3.05:1 | AA large text | Lc 57.1 | Large or bold text, headings |
| #409EC0 text on black | 6.86:1 | AA | Lc -44.6 | 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 500.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C7DDE7
oklch(88.4% 0.027 226.8)
-
Step 300
300
#9FC8D9
oklch(80.9% 0.05 225.1)
-
Step 400
400
#68ABC6
oklch(70.7% 0.079 225.8)
-
Step 500
500 (this color)
#409EC0
oklch(65.8% 0.101 225.5)
-
Step 600
600
#007FA2
oklch(55.5% 0.106 225.7)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005871
oklch(42.8% 0.081 225.4)
-
Step 900
900
#0D485C
oklch(37.6% 0.066 226.3)
-
Step 950
950
#0B2B36
oklch(27.1% 0.042 224.5)
#409EC0 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) | #8B9BC2 | 0.076 |
| Deuteranopia (no green cones) | #7A8EC0 | 0.068 |
| Tritanopia (no blue cones) | #00A8A9 | 0.057 |
| Achromatopsia (no color) | #939393 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #409EC0
#409EC0
oklch(65.8% 0.101 225.5)
- #C47D5C
#C47D5C
oklch(65.7% 0.1 45.5)
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 #409EC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.052
- Turquoise Blue #06B1C4 ΔE 0.054
- Greyblue #77A1B5 ΔE 0.054
- Faded Blue #658CBB ΔE 0.055
- Silver Lake Blue #778DA9 ΔE 0.066
- Blue NCS #118AB2 ΔE 0.066
- Dusty Blue #5A86AD ΔE 0.067
- Blue Grey #758DA3 ΔE 0.067
Use #409EC0 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.