#4098CF
Closest named color: Faded Blue (#658CBB). oklch(65% 0.117 239.7), rgb(64, 152, 207).
Aa
Black text reads best on this color (6.61:1).
About this color
#4098CF is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.117 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.046 away. Black text reads best on it, at 6.61:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.61:1 |
| White text | 3.17:1 |
Values
| HEX | #4098CF |
| RGB | rgb(64, 152, 207) |
| HSL | hsl(203, 60%, 53%) |
| OKLCH | oklch(65% 0.117 239.7) |
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 #4098CF | 3.17:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #4098CF | 6.61:1 | AA | Lc 45.4 | Large or bold text, headings |
| #4098CF text on white | 3.17:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #4098CF text on black | 6.61:1 | AA | Lc -43.1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDEC
oklch(88.6% 0.031 237.6)
-
Step 300
300
#9FC6E2
oklch(80.8% 0.057 239.6)
-
Step 400
400
#69A8D4
oklch(70.6% 0.092 240.3)
-
Step 500
500 (this color)
#4098CF
oklch(65% 0.117 239.7)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#104666
oklch(37.7% 0.077 240.2)
-
Step 950
950
#0C293C
oklch(26.9% 0.049 240.9)
#4098CF 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) | #7F98D2 | 0.063 |
| Deuteranopia (no green cones) | #6B8ACE | 0.051 |
| Tritanopia (no blue cones) | #00A6AB | 0.081 |
| Achromatopsia (no color) | #909090 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4098CF
#4098CF
oklch(65% 0.117 239.7)
- #C37C3E
#C37C3E
oklch(64.9% 0.117 59.4)
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 #4098CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.046
- Dark Sky Blue #448EE4 ΔE 0.047
- Chefchaouen Blue #4895EF ΔE 0.052
- Water Blue #0E87CC ΔE 0.057
- Cool Blue #4984B8 ΔE 0.058
- Cornflower Blue #6495ED ΔE 0.059
- Dusty Blue #5A86AD ΔE 0.062
- Blue NCS #118AB2 ΔE 0.063
Use #4098CF 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.