#4398CB
Closest named color: Faded Blue (#658CBB). oklch(64.9% 0.112 238.3), rgb(67, 152, 203).
Aa
Black text reads best on this color (6.59:1).
About this color
#4398CB is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.112 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.043 away. Black text reads best on it, at 6.59:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.59:1 |
| White text | 3.18:1 |
Values
| HEX | #4398CB |
| RGB | rgb(67, 152, 203) |
| HSL | hsl(203, 57%, 53%) |
| OKLCH | oklch(64.9% 0.112 238.3) |
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 #4398CB | 3.18:1 | AA large text | Lc -64.2 | Content text, not long reading |
| Black text on #4398CB | 6.59:1 | AA | Lc 45.3 | Large or bold text, headings |
| #4398CB text on white | 3.18:1 | AA large text | Lc 58.8 | Large or bold text, headings |
| #4398CB text on black | 6.59:1 | AA | Lc -43.0 | 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
#C8DDEB
oklch(88.6% 0.03 236.9)
-
Step 300
300
#A1C6E0
oklch(80.8% 0.054 239)
-
Step 400
400
#6BA9D1
oklch(70.8% 0.087 238)
-
Step 500
500 (this color)
#4398CB
oklch(64.9% 0.112 238.3)
-
Step 600
600
#0A7CB2
oklch(55.7% 0.121 238.2)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#04557C
oklch(42.7% 0.094 238.4)
-
Step 900
900
#134664
oklch(37.6% 0.073 239.3)
-
Step 950
950
#0D293A
oklch(26.9% 0.046 238.6)
#4398CB 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) | #8098CD | 0.062 |
| Deuteranopia (no green cones) | #6E8ACA | 0.052 |
| Tritanopia (no blue cones) | #00A5A9 | 0.077 |
| Achromatopsia (no color) | #909090 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4398CB
#4398CB
oklch(64.9% 0.112 238.3)
- #C17D45
#C17D45
oklch(65% 0.111 58.5)
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 #4398CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.043
- Dark Sky Blue #448EE4 ΔE 0.052
- Cool Blue #4984B8 ΔE 0.057
- Chefchaouen Blue #4895EF ΔE 0.058
- Dusty Blue #5A86AD ΔE 0.059
- Water Blue #0E87CC ΔE 0.059
- Blue NCS #118AB2 ΔE 0.061
- Off Blue #5684AE ΔE 0.062
Use #4398CB 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.