#618CAF
Closest named color: Faded Blue (#658CBB). oklch(62.2% 0.071 243.8), rgb(97, 140, 175).
Aa
Black text reads best on this color (5.87:1).
About this color
#618CAF is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.071 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.020 away. Black text reads best on it, at 5.87:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.87:1 |
| White text | 3.57:1 |
Values
| HEX | #618CAF |
| RGB | rgb(97, 140, 175) |
| HSL | hsl(207, 33%, 53%) |
| OKLCH | oklch(62.2% 0.071 243.8) |
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 #618CAF | 3.57:1 | AA large text | Lc -68.7 | Content text, not long reading |
| Black text on #618CAF | 5.87:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #618CAF text on white | 3.57:1 | AA large text | Lc 63.2 | Content text, not long reading |
| #618CAF text on black | 5.87:1 | AA | Lc -38.4 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CFDBE5
oklch(88.5% 0.019 243)
-
Step 300
300
#AEC4D6
oklch(80.9% 0.035 242.8)
-
Step 400
400
#83A5C1
oklch(70.7% 0.056 243.5)
-
Step 500
500 (this color)
#618CAF
oklch(62.2% 0.071 243.8)
-
Step 600
600
#4A789D
oklch(55.5% 0.077 244.1)
-
Step 700
700
#3B6587
oklch(49.1% 0.072 244.5)
-
Step 800
800
#31536D
oklch(42.8% 0.059 242.8)
-
Step 900
900
#2B4459
oklch(37.6% 0.048 244.9)
-
Step 950
950
#1A2834
oklch(27% 0.03 245.1)
#618CAF 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) | #7D8CB1 | 0.035 |
| Deuteranopia (no green cones) | #7384AE | 0.029 |
| Tritanopia (no blue cones) | #419498 | 0.058 |
| Achromatopsia (no color) | #878787 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618CAF
#618CAF
oklch(62.2% 0.071 243.8)
- #A67E59
#A67E59
oklch(62.3% 0.072 63.7)
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 #618CAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.020
- Dusty Blue #5A86AD ΔE 0.020
- Off Blue #5684AE ΔE 0.028
- Silver Lake Blue #778DA9 ΔE 0.028
- Blue Grey #758DA3 ΔE 0.030
- Light Slate Gray #778899 ΔE 0.039
- Cool Blue #4984B8 ΔE 0.040
- Steel #738595 ΔE 0.042
Use #618CAF 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.