#436C8E
Closest named color: Metallic Blue (#4F738E). oklch(51.6% 0.071 244.8), rgb(67, 108, 142).
Aa
White text reads best on this color (5.56:1).
About this color
#436C8E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.071 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.027 away. White text reads best on it, at 5.56:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.77:1 |
| White text | 5.56:1 |
Values
| HEX | #436C8E |
| RGB | rgb(67, 108, 142) |
| HSL | hsl(207, 36%, 41%) |
| OKLCH | oklch(51.6% 0.071 244.8) |
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 #436C8E | 5.56:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #436C8E | 3.77:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #436C8E text on white | 5.56:1 | AA | Lc 77.7 | Fine for body text |
| #436C8E text on black | 3.77:1 | AA large text | Lc -24.1 | 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 700.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#CFDBE5
oklch(88.5% 0.019 243)
-
Step 300
300
#AFC4D6
oklch(81% 0.034 244)
-
Step 400
400
#84A5C1
oklch(70.7% 0.055 244.3)
-
Step 500
500
#658EB2
oklch(63.1% 0.071 245.7)
-
Step 600
600
#4B789D
oklch(55.6% 0.076 244.6)
-
Step 700
700 (this color)
#436C8E
oklch(51.6% 0.071 244.8)
-
Step 800
800
#32526D
oklch(42.6% 0.059 245.2)
-
Step 900
900
#2C4458
oklch(37.6% 0.046 244.6)
-
Step 950
950
#1A2834
oklch(27% 0.03 245.1)
#436C8E 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) | #5E6C90 | 0.034 |
| Deuteranopia (no green cones) | #54658D | 0.027 |
| Tritanopia (no blue cones) | #1A7478 | 0.059 |
| Achromatopsia (no color) | #686868 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436C8E
#436C8E
oklch(51.6% 0.071 244.8)
- #845F3A
#845F3A
oklch(51.6% 0.071 65.1)
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 #436C8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.027
- Muted Blue #3B719F ΔE 0.027
- Denim #3B638C ΔE 0.029
- Dull Blue #49759C ΔE 0.032
- Sea Blue #047495 ΔE 0.039
- Ocean Blue #03719C ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.042
Use #436C8E 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.