#607999
Closest named color: Stormy Blue (#507B9C). oklch(56.9% 0.058 254.8), rgb(96, 121, 153).
Aa
Black text reads best on this color (4.69:1).
About this color
#607999 is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.058 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.019 away. Black text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #607999 |
| RGB | rgb(96, 121, 153) |
| HSL | hsl(214, 23%, 49%) |
| OKLCH | oklch(56.9% 0.058 254.8) |
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 #607999 | 4.47:1 | AA large text | Lc -76.5 | Fine for body text |
| Black text on #607999 | 4.69:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #607999 text on white | 4.47:1 | AA large text | Lc 71.0 | Content text, not long reading |
| #607999 text on black | 4.69:1 | AA | Lc -30.6 | 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 600.
-
Step 50
50
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D3DAE3
oklch(88.6% 0.015 254.6)
-
Step 300
300
#B6C2D2
oklch(81% 0.026 255.6)
-
Step 400
400
#8FA2BB
oklch(70.6% 0.043 255.3)
-
Step 500
500
#748BAA
oklch(63% 0.054 256)
-
Step 600
600 (this color)
#607999
oklch(56.9% 0.058 254.8)
-
Step 700
700
#4C627F
oklch(49% 0.054 255.5)
-
Step 800
800
#3E5067
oklch(42.6% 0.045 254.8)
-
Step 900
900
#354354
oklch(37.8% 0.034 253.6)
-
Step 950
950
#1F2731
oklch(27% 0.022 254.2)
#607999 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) | #6D7A9B | 0.018 |
| Deuteranopia (no green cones) | #677598 | 0.014 |
| Tritanopia (no blue cones) | #4E8084 | 0.050 |
| Achromatopsia (no color) | #777777 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607999
#607999
oklch(56.9% 0.058 254.8)
- #8B7250
#8B7250
oklch(56.8% 0.058 74.7)
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 #607999, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.019
- Grey Blue #647D8E ΔE 0.024
- Cerulean #457B9D ΔE 0.030
- Dull Blue #49759C ΔE 0.032
- Metallic Blue #4F738E ΔE 0.033
- Slate Gray #708090 ΔE 0.036
- Battleship Grey #6B7C85 ΔE 0.037
- Off Blue #5684AE ΔE 0.039
Use #607999 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.