#436EA6
Closest named color: Flat Blue (#3C73A8). oklch(53.3% 0.101 255.6), rgb(67, 110, 166).
Aa
White text reads best on this color (5.22:1).
About this color
#436EA6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.101 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.014 away. White text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.01:1 |
| White text | 5.22:1 |
Values
| HEX | #436EA6 |
| RGB | rgb(67, 110, 166) |
| HSL | hsl(214, 42%, 46%) |
| OKLCH | oklch(53.3% 0.101 255.6) |
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 #436EA6 | 5.22:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #436EA6 | 4.01:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #436EA6 text on white | 5.22:1 | AA | Lc 75.8 | Fine for body text |
| #436EA6 text on black | 4.01:1 | AA large text | Lc -26.0 | Dividers and decoration only |
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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEA
oklch(88.4% 0.026 255.6)
-
Step 300
300
#AEC3DE
oklch(81% 0.045 254.8)
-
Step 400
400
#83A3CE
oklch(70.7% 0.073 255.9)
-
Step 500
500
#638CC1
oklch(63.2% 0.092 255.2)
-
Step 600
600 (this color)
#436EA6
oklch(53.3% 0.101 255.6)
-
Step 700
700
#3B6295
oklch(49.1% 0.094 255.7)
-
Step 800
800
#315079
oklch(42.7% 0.078 255.9)
-
Step 900
900
#2B4361
oklch(37.8% 0.06 254.6)
-
Step 950
950
#1A2739
oklch(27% 0.038 256.7)
#436EA6 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) | #5772A8 | 0.027 |
| Deuteranopia (no green cones) | #4A68A5 | 0.017 |
| Tritanopia (no blue cones) | #007B82 | 0.087 |
| Achromatopsia (no color) | #6C6C6C | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436EA6
#436EA6
oklch(53.3% 0.101 255.6)
- #8E631B
#8E631B
oklch(53.2% 0.101 75.4)
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 #436EA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.014
- French Blue #436BAD ΔE 0.016
- Muted Blue #3B719F ΔE 0.018
- Dull Blue #49759C ΔE 0.030
- Mid Blue #276AB3 ΔE 0.035
- Nice Blue #107AB0 ΔE 0.042
- Ocean Blue #03719C ΔE 0.043
- Windows Blue #3778BF ΔE 0.043
Use #436EA6 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.