#418FBF
Closest named color: Cool Blue (#4984B8). oklch(62.2% 0.105 238.7), rgb(65, 143, 191).
Aa
Black text reads best on this color (5.90:1).
About this color
#418FBF is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.105 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.030 away. Black text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.90:1 |
| White text | 3.55:1 |
Values
| HEX | #418FBF |
| RGB | rgb(65, 143, 191) |
| HSL | hsl(203, 50%, 50%) |
| OKLCH | oklch(62.2% 0.105 238.7) |
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 #418FBF | 3.55:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #418FBF | 5.90:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #418FBF text on white | 3.55:1 | AA large text | Lc 62.9 | Content text, not long reading |
| #418FBF text on black | 5.90:1 | AA | Lc -38.8 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A3C6DF
oklch(80.9% 0.052 239.4)
-
Step 400
400
#6FA8CF
oklch(70.7% 0.083 239.4)
-
Step 500
500 (this color)
#418FBF
oklch(62.2% 0.105 238.7)
-
Step 600
600
#1D7BAE
oklch(55.5% 0.114 238.7)
-
Step 700
700
#0B6896
oklch(49.2% 0.106 238.5)
-
Step 800
800
#11557A
oklch(42.8% 0.088 238.8)
-
Step 900
900
#184662
oklch(37.7% 0.069 239.2)
-
Step 950
950
#102939
oklch(26.9% 0.043 239.2)
#418FBF 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) | #798FC1 | 0.059 |
| Deuteranopia (no green cones) | #6882BE | 0.049 |
| Tritanopia (no blue cones) | #009B9F | 0.074 |
| Achromatopsia (no color) | #888888 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #418FBF
#418FBF
oklch(62.2% 0.105 238.7)
- #B57641
#B57641
oklch(62.1% 0.105 59.1)
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 #418FBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.030
- Faded Blue #658CBB ΔE 0.034
- Dusty Blue #5A86AD ΔE 0.036
- Off Blue #5684AE ΔE 0.036
- Blue NCS #118AB2 ΔE 0.037
- Steel Blue #4682B4 ΔE 0.037
- Water Blue #0E87CC ΔE 0.043
- Dark Sky Blue #448EE4 ΔE 0.058
Use #418FBF 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.