#618DBB
Closest named color: Faded Blue (#658CBB). oklch(63% 0.085 250.4), rgb(97, 141, 187).
Aa
Black text reads best on this color (6.03:1).
About this color
#618DBB is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.085 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.005 away. Black text reads best on it, at 6.03:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.03:1 |
| White text | 3.47:1 |
Values
| HEX | #618DBB |
| RGB | rgb(97, 141, 187) |
| HSL | hsl(211, 40%, 56%) |
| OKLCH | oklch(63% 0.085 250.4) |
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 #618DBB | 3.47:1 | AA large text | Lc -67.7 | Content text, not long reading |
| Black text on #618DBB | 6.03:1 | AA | Lc 41.8 | Non-text elements, placeholder text |
| #618DBB text on white | 3.47:1 | AA large text | Lc 62.3 | Content text, not long reading |
| #618DBB text on black | 6.03:1 | AA | Lc -39.4 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ADC3DB
oklch(80.8% 0.042 250.6)
-
Step 400
400
#81A4C9
oklch(70.6% 0.067 250.2)
-
Step 500
500 (this color)
#618DBB
oklch(63% 0.085 250.4)
-
Step 600
600
#4777A7
oklch(55.6% 0.092 249.8)
-
Step 700
700
#386490
oklch(49.2% 0.086 250)
-
Step 800
800
#2F5175
oklch(42.6% 0.072 251.1)
-
Step 900
900
#2A445E
oklch(37.8% 0.055 249.5)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#618DBB 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) | #7B8EBD | 0.032 |
| Deuteranopia (no green cones) | #6F85BA | 0.026 |
| Tritanopia (no blue cones) | #39989D | 0.073 |
| Achromatopsia (no color) | #898989 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618DBB
#618DBB
oklch(63% 0.085 250.4)
- #AA804E
#AA804E
oklch(63% 0.085 70.1)
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 #618DBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.005
- Dusty Blue #5A86AD ΔE 0.028
- Off Blue #5684AE ΔE 0.033
- Silver Lake Blue #778DA9 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.038
- Blue Grey #758DA3 ΔE 0.042
- Steel Blue #4682B4 ΔE 0.045
- Light Slate Gray #778899 ΔE 0.054
Use #618DBB 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.