#618CB3
Closest named color: Faded Blue (#658CBB). oklch(62.4% 0.076 246.7), rgb(97, 140, 179).
Aa
Black text reads best on this color (5.91:1).
About this color
#618CB3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.076 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.014 away. Black text reads best on it, at 5.91:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.91:1 |
| White text | 3.55:1 |
Values
| HEX | #618CB3 |
| RGB | rgb(97, 140, 179) |
| HSL | hsl(209, 35%, 54%) |
| OKLCH | oklch(62.4% 0.076 246.7) |
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 #618CB3 | 3.55:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #618CB3 | 5.91:1 | AA | Lc 41.0 | Non-text elements, placeholder text |
| #618CB3 text on white | 3.55:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #618CB3 text on black | 5.91:1 | AA | Lc -38.6 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE6
oklch(88.6% 0.02 245.7)
-
Step 300
300
#AEC3D8
oklch(80.8% 0.038 248.3)
-
Step 400
400
#83A5C4
oklch(70.8% 0.059 246.3)
-
Step 500
500 (this color)
#618CB3
oklch(62.4% 0.076 246.7)
-
Step 600
600
#4978A1
oklch(55.7% 0.082 246.3)
-
Step 700
700
#3A658A
oklch(49.2% 0.077 246.1)
-
Step 800
800
#315270
oklch(42.7% 0.063 247.3)
-
Step 900
900
#2B445B
oklch(37.7% 0.05 247.3)
-
Step 950
950
#1A2835
oklch(27% 0.031 247.2)
#618CB3 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) | #7C8DB5 | 0.034 |
| Deuteranopia (no green cones) | #7284B2 | 0.028 |
| Tritanopia (no blue cones) | #3F9599 | 0.064 |
| Achromatopsia (no color) | #888888 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618CB3
#618CB3
oklch(62.4% 0.076 246.7)
- #A77E55
#A77E55
oklch(62.4% 0.076 65.7)
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 #618CB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.014
- Dusty Blue #5A86AD ΔE 0.020
- Off Blue #5684AE ΔE 0.027
- Silver Lake Blue #778DA9 ΔE 0.030
- Blue Grey #758DA3 ΔE 0.034
- Cool Blue #4984B8 ΔE 0.038
- Steel Blue #4682B4 ΔE 0.043
- Light Slate Gray #778899 ΔE 0.044
Use #618CB3 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.