#409FC0
Closest named color: Turquoise Blue (#06B1C4). oklch(66% 0.1 224.5), rgb(64, 159, 192).
Aa
Black text reads best on this color (6.93:1).
About this color
#409FC0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.100 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.051 away. Black text reads best on it, at 6.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 6.93:1 |
| White text | 3.02:1 |
Values
| HEX | #409FC0 |
| RGB | rgb(64, 159, 192) |
| HSL | hsl(195, 50%, 50%) |
| OKLCH | oklch(66% 0.1 224.5) |
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 #409FC0 | 3.02:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #409FC0 | 6.93:1 | AA | Lc 47.3 | Large or bold text, headings |
| #409FC0 text on white | 3.02:1 | AA large text | Lc 56.8 | Large or bold text, headings |
| #409FC0 text on black | 6.93:1 | AA | Lc -45.0 | Large or bold text, headings |
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
#67ABC5
oklch(70.6% 0.079 224.6)
-
Step 500
500 (this color)
#409FC0
oklch(66% 0.1 224.5)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#0D495B
oklch(37.8% 0.065 223.4)
-
Step 950
950
#0B2B36
oklch(27.1% 0.042 224.5)
#409FC0 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) | #8D9CC2 | 0.079 |
| Deuteranopia (no green cones) | #7B8EC0 | 0.070 |
| Tritanopia (no blue cones) | #00A9AA | 0.055 |
| Achromatopsia (no color) | #949494 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #409FC0
#409FC0
oklch(66% 0.1 224.5)
- #C57E5E
#C57E5E
oklch(66% 0.1 44.8)
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 #409FC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.051
- Cadet Blue #5F9EA0 ΔE 0.051
- Greyblue #77A1B5 ΔE 0.053
- Faded Blue #658CBB ΔE 0.057
- Silver Lake Blue #778DA9 ΔE 0.067
- Blue Grey #758DA3 ΔE 0.068
- Sea #3C9992 ΔE 0.069
- Blue NCS #118AB2 ΔE 0.069
Use #409FC0 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.