#409DBD
Closest named color: Cadet Blue (#5F9EA0). oklch(65.4% 0.099 224.2), rgb(64, 157, 189).
Aa
Black text reads best on this color (6.77:1).
About this color
#409DBD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.099 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.049 away. Black text reads best on it, at 6.77:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.77:1 |
| White text | 3.09:1 |
Values
| HEX | #409DBD |
| RGB | rgb(64, 157, 189) |
| HSL | hsl(195, 49%, 50%) |
| OKLCH | oklch(65.4% 0.099 224.2) |
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 #409DBD | 3.09:1 | AA large text | Lc -63.1 | Content text, not long reading |
| Black text on #409DBD | 6.77:1 | AA | Lc 46.4 | Large or bold text, headings |
| #409DBD text on white | 3.09:1 | AA large text | Lc 57.7 | Large or bold text, headings |
| #409DBD text on black | 6.77:1 | AA | Lc -44.1 | 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
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C7DDE6
oklch(88.4% 0.027 224.3)
-
Step 300
300
#A0C8D8
oklch(80.9% 0.048 224.2)
-
Step 400
400
#69ABC4
oklch(70.6% 0.076 224.2)
-
Step 500
500 (this color)
#409DBD
oklch(65.4% 0.099 224.2)
-
Step 600
600
#0080A1
oklch(55.7% 0.105 224.1)
-
Step 700
700
#006B87
oklch(49% 0.092 224)
-
Step 800
800
#00586F
oklch(42.7% 0.08 223.4)
-
Step 900
900
#0F495B
oklch(37.8% 0.064 223.7)
-
Step 950
950
#0C2B35
oklch(27.1% 0.04 222.7)
#409DBD 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) | #8B9ABF | 0.077 |
| Deuteranopia (no green cones) | #7A8DBD | 0.068 |
| Tritanopia (no blue cones) | #00A7A7 | 0.056 |
| Achromatopsia (no color) | #929292 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #409DBD
#409DBD
oklch(65.4% 0.099 224.2)
- #C37C5D
#C37C5D
oklch(65.4% 0.099 44.2)
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 #409DBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.049
- Faded Blue #658CBB ΔE 0.054
- Greyblue #77A1B5 ΔE 0.055
- Turquoise Blue #06B1C4 ΔE 0.056
- Blue NCS #118AB2 ΔE 0.063
- Silver Lake Blue #778DA9 ΔE 0.064
- Dusty Blue #5A86AD ΔE 0.064
- Blue Grey #758DA3 ΔE 0.064
Use #409DBD 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.